diff --git a/src/main/java/com/ajou/hertz/domain/instrument/acoustic_and_classic_guitar/dto/response/AcousticAndClassicGuitarResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/acoustic_and_classic_guitar/dto/response/AcousticAndClassicGuitarResponse.java
index 8248462..2ccec2c 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/acoustic_and_classic_guitar/dto/response/AcousticAndClassicGuitarResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/acoustic_and_classic_guitar/dto/response/AcousticAndClassicGuitarResponse.java
@@ -36,7 +36,7 @@ public class AcousticAndClassicGuitarResponse extends InstrumentResponse {
 
 	private AcousticAndClassicGuitarResponse(
 		Long id,
-		Long sellerId,
+		SellerResponse seller,
 		String title,
 		InstrumentProgressStatus progressStatus,
 		AddressResponse tradeAddress,
@@ -52,7 +52,7 @@ private AcousticAndClassicGuitarResponse(
 		AcousticAndClassicGuitarPickUp pickUp
 	) {
 		super(
-			id, sellerId, InstrumentCategory.ACOUSTIC_AND_CLASSIC_GUITAR, title, progressStatus, tradeAddress,
+			id, seller, InstrumentCategory.ACOUSTIC_AND_CLASSIC_GUITAR, title, progressStatus, tradeAddress,
 			qualityStatus, price, hasAnomaly, description, images, hashtags
 		);
 		this.brand = brand;
diff --git a/src/main/java/com/ajou/hertz/domain/instrument/amplifier/dto/response/AmplifierResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/amplifier/dto/response/AmplifierResponse.java
index ec3d6f0..21aebbb 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/amplifier/dto/response/AmplifierResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/amplifier/dto/response/AmplifierResponse.java
@@ -32,7 +32,7 @@ public class AmplifierResponse extends InstrumentResponse {
 
 	private AmplifierResponse(
 		Long id,
-		Long sellerId,
+		SellerResponse seller,
 		String title,
 		InstrumentProgressStatus progressStatus,
 		AddressResponse tradeAddress,
@@ -47,7 +47,7 @@ private AmplifierResponse(
 		AmplifierUsage usage
 	) {
 		super(
-			id, sellerId, InstrumentCategory.AMPLIFIER, title, progressStatus, tradeAddress,
+			id, seller, InstrumentCategory.AMPLIFIER, title, progressStatus, tradeAddress,
 			qualityStatus, price, hasAnomaly, description, images, hashtags
 		);
 		this.type = type;
diff --git a/src/main/java/com/ajou/hertz/domain/instrument/audio_equipment/dto/response/AudioEquipmentResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/audio_equipment/dto/response/AudioEquipmentResponse.java
index b98f7f6..86750d0 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/audio_equipment/dto/response/AudioEquipmentResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/audio_equipment/dto/response/AudioEquipmentResponse.java
@@ -24,7 +24,7 @@ public class AudioEquipmentResponse extends InstrumentResponse {
 
 	private AudioEquipmentResponse(
 		Long id,
-		Long sellerId,
+		SellerResponse seller,
 		String title,
 		InstrumentProgressStatus progressStatus,
 		AddressResponse tradeAddress,
@@ -37,7 +37,7 @@ private AudioEquipmentResponse(
 		AudioEquipmentType type
 	) {
 		super(
-			id, sellerId, InstrumentCategory.AUDIO_EQUIPMENT, title, progressStatus, tradeAddress,
+			id, seller, InstrumentCategory.AUDIO_EQUIPMENT, title, progressStatus, tradeAddress,
 			qualityStatus, price, hasAnomaly, description, images, hashtags
 		);
 		this.type = type;
diff --git a/src/main/java/com/ajou/hertz/domain/instrument/bass_guitar/dto/response/BassGuitarResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/bass_guitar/dto/response/BassGuitarResponse.java
index 430ebf0..e3e2c73 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/bass_guitar/dto/response/BassGuitarResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/bass_guitar/dto/response/BassGuitarResponse.java
@@ -36,7 +36,7 @@ public class BassGuitarResponse extends InstrumentResponse {
 
 	private BassGuitarResponse(
 		Long id,
-		Long sellerId,
+		SellerResponse seller,
 		String title,
 		InstrumentProgressStatus progressStatus,
 		AddressResponse tradeAddress,
@@ -52,7 +52,7 @@ private BassGuitarResponse(
 		GuitarColor color
 	) {
 		super(
-			id, sellerId, InstrumentCategory.BASS_GUITAR, title, progressStatus, tradeAddress,
+			id, seller, InstrumentCategory.BASS_GUITAR, title, progressStatus, tradeAddress,
 			qualityStatus, price, hasAnomaly, description, images, hashtags
 		);
 		this.brand = brand;
diff --git a/src/main/java/com/ajou/hertz/domain/instrument/dto/response/InstrumentResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/dto/response/InstrumentResponse.java
index b0d81b7..acaeccd 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/dto/response/InstrumentResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/dto/response/InstrumentResponse.java
@@ -1,18 +1,18 @@
 package com.ajou.hertz.domain.instrument.dto.response;
 
-import java.util.List;
-
 import com.ajou.hertz.common.dto.response.AddressResponse;
 import com.ajou.hertz.domain.instrument.constant.InstrumentCategory;
 import com.ajou.hertz.domain.instrument.constant.InstrumentProgressStatus;
 import com.ajou.hertz.domain.instrument.dto.InstrumentDto;
-
+import com.ajou.hertz.domain.user.dto.UserDto;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
+import java.util.List;
+
 @AllArgsConstructor(access = AccessLevel.PROTECTED)
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @Getter
@@ -21,8 +21,8 @@ public abstract class InstrumentResponse {
 	@Schema(description = "Id of instrument", example = "2")
 	private Long id;
 
-	@Schema(description = "Id of seller", example = "1")
-	private Long sellerId;
+	@Schema(description = "판매자 정보")
+	private SellerResponse seller;
 
 	@Schema(description = "종류")
 	private InstrumentCategory category;
@@ -56,7 +56,7 @@ public abstract class InstrumentResponse {
 
 	protected InstrumentResponse(InstrumentDto instrumentDto) {
 		this.id = instrumentDto.getId();
-		this.sellerId = instrumentDto.getSeller().getId();
+		this.seller = SellerResponse.from(instrumentDto.getSeller());
 		this.category = instrumentDto.getCategory();
 		this.title = instrumentDto.getTitle();
 		this.progressStatus = instrumentDto.getProgressStatus();
@@ -66,8 +66,26 @@ protected InstrumentResponse(InstrumentDto instrumentDto) {
 		this.hasAnomaly = instrumentDto.getHasAnomaly();
 		this.description = instrumentDto.getDescription();
 		this.images = instrumentDto.getImages().stream()
-			.map(InstrumentImageResponse::from)
-			.toList();
+				.map(InstrumentImageResponse::from)
+				.toList();
 		this.hashtags = instrumentDto.getHashtags();
 	}
+
+	public record SellerResponse(
+			@Schema(
+					description = "Id of user",
+					example = "1"
+			) Long id,
+			@Schema(
+					description = "연락 수단",
+					example = "https://contack-link"
+			) String contactLink
+	) {
+		private static SellerResponse from(UserDto userDto) {
+			return new SellerResponse(
+					userDto.getId(),
+					userDto.getContactLink()
+			);
+		}
+	}
 }
diff --git a/src/main/java/com/ajou/hertz/domain/instrument/effector/dto/response/EffectorResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/effector/dto/response/EffectorResponse.java
index 42f57c5..ec74535 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/effector/dto/response/EffectorResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/effector/dto/response/EffectorResponse.java
@@ -28,7 +28,7 @@ public class EffectorResponse extends InstrumentResponse {
 
 	private EffectorResponse(
 		Long id,
-		Long sellerId,
+		SellerResponse seller,
 		String title,
 		InstrumentProgressStatus progressStatus,
 		AddressResponse tradeAddress,
@@ -42,7 +42,7 @@ private EffectorResponse(
 		EffectorFeature feature
 	) {
 		super(
-			id, sellerId, InstrumentCategory.EFFECTOR, title, progressStatus, tradeAddress,
+			id, seller, InstrumentCategory.EFFECTOR, title, progressStatus, tradeAddress,
 			qualityStatus, price, hasAnomaly, description, images, hashtags
 		);
 		this.type = type;
diff --git a/src/main/java/com/ajou/hertz/domain/instrument/electric_guitar/dto/response/ElectricGuitarResponse.java b/src/main/java/com/ajou/hertz/domain/instrument/electric_guitar/dto/response/ElectricGuitarResponse.java
index 0d55d0e..8d84db9 100644
--- a/src/main/java/com/ajou/hertz/domain/instrument/electric_guitar/dto/response/ElectricGuitarResponse.java
+++ b/src/main/java/com/ajou/hertz/domain/instrument/electric_guitar/dto/response/ElectricGuitarResponse.java
@@ -35,7 +35,7 @@ public class ElectricGuitarResponse extends InstrumentResponse {
 
 	private ElectricGuitarResponse(
 		Long id,
-		Long sellerId,
+		SellerResponse seller,
 		String title,
 		InstrumentProgressStatus progressStatus,
 		AddressResponse tradeAddress,
@@ -51,7 +51,7 @@ private ElectricGuitarResponse(
 		GuitarColor color
 	) {
 		super(
-			id, sellerId, InstrumentCategory.ELECTRIC_GUITAR, title, progressStatus, tradeAddress,
+			id, seller, InstrumentCategory.ELECTRIC_GUITAR, title, progressStatus, tradeAddress,
 			qualityStatus, price, hasAnomaly, description, images, hashtags
 		);
 		this.brand = brand;
diff --git a/src/test/java/com/ajou/hertz/unit/domain/instrument/controller/InstrumentControllerTest.java b/src/test/java/com/ajou/hertz/unit/domain/instrument/controller/InstrumentControllerTest.java
index dfaf5ab..a131789 100644
--- a/src/test/java/com/ajou/hertz/unit/domain/instrument/controller/InstrumentControllerTest.java
+++ b/src/test/java/com/ajou/hertz/unit/domain/instrument/controller/InstrumentControllerTest.java
@@ -110,7 +110,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isOk())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(expectedResult.getSeller().getId()))
+			.andExpect(jsonPath("$.seller.id").value(expectedResult.getSeller().getId()))
 			.andExpect(jsonPath("$.category").value(expectedResult.getCategory().name()));
 		then(instrumentQueryService).should().getInstrumentDtoById(instrumentId);
 		verifyEveryMocksShouldHaveNoMoreInteractions();
@@ -433,7 +433,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isCreated())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(sellerId))
+			.andExpect(jsonPath("$.seller.id").value(sellerId))
 			.andExpect(jsonPath("$.images").isArray())
 			.andExpect(jsonPath("$.images.size()").value(expectedResult.getImages().size()))
 			.andExpect(jsonPath("$.hashtags").isArray())
@@ -479,7 +479,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isCreated())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(sellerId))
+			.andExpect(jsonPath("$.seller.id").value(sellerId))
 			.andExpect(jsonPath("$.images").isArray())
 			.andExpect(jsonPath("$.images.size()").value(expectedResult.getImages().size()))
 			.andExpect(jsonPath("$.hashtags").isArray())
@@ -525,7 +525,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isCreated())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(sellerId))
+			.andExpect(jsonPath("$.seller.id").value(sellerId))
 			.andExpect(jsonPath("$.images").isArray())
 			.andExpect(jsonPath("$.images.size()").value(expectedResult.getImages().size()))
 			.andExpect(jsonPath("$.hashtags").isArray())
@@ -569,7 +569,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isCreated())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(sellerId))
+			.andExpect(jsonPath("$.seller.id").value(sellerId))
 			.andExpect(jsonPath("$.images").isArray())
 			.andExpect(jsonPath("$.images.size()").value(expectedResult.getImages().size()))
 			.andExpect(jsonPath("$.hashtags").isArray())
@@ -612,7 +612,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isCreated())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(sellerId))
+			.andExpect(jsonPath("$.seller.id").value(sellerId))
 			.andExpect(jsonPath("$.images").isArray())
 			.andExpect(jsonPath("$.images.size()").value(expectedResult.getImages().size()))
 			.andExpect(jsonPath("$.hashtags").isArray())
@@ -653,7 +653,7 @@ public InstrumentControllerTest(MockMvc mvc) {
 			)
 			.andExpect(status().isCreated())
 			.andExpect(jsonPath("$.id").value(expectedResult.getId()))
-			.andExpect(jsonPath("$.sellerId").value(sellerId))
+			.andExpect(jsonPath("$.seller.id").value(sellerId))
 			.andExpect(jsonPath("$.images").isArray())
 			.andExpect(jsonPath("$.images.size()").value(expectedResult.getImages().size()))
 			.andExpect(jsonPath("$.hashtags").isArray())