diff --git a/pkg/schedule/prepare_checker.go b/pkg/schedule/prepare_checker.go
index 6a28c04ca85a..f691432c72c3 100644
--- a/pkg/schedule/prepare_checker.go
+++ b/pkg/schedule/prepare_checker.go
@@ -15,6 +15,7 @@
 package schedule
 
 import (
+	"fmt"
 	"time"
 
 	"github.com/pingcap/log"
@@ -39,6 +40,7 @@ func newPrepareChecker() *prepareChecker {
 func (checker *prepareChecker) check(c *core.BasicCluster, collectWaitTime ...time.Duration) bool {
 	checker.Lock()
 	defer checker.Unlock()
+	log.Info("check prepare checker", zap.Bool("prepared", checker.prepared), zap.String("count", fmt.Sprintf("%d", c.GetTotalRegionCount())), zap.String("not-from-storage-count", fmt.Sprintf("%d", c.GetClusterNotFromStorageRegionsCnt())))
 	if checker.prepared {
 		return true
 	}
diff --git a/tests/server/api/api_test.go b/tests/server/api/api_test.go
index 14df5ff8eeab..d52630718b59 100644
--- a/tests/server/api/api_test.go
+++ b/tests/server/api/api_test.go
@@ -1,17 +1,3 @@
-// Copyright 2018 TiKV Project Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 package api
 
 import (
@@ -33,6 +19,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 	"github.com/tikv/pd/pkg/core"
+	"github.com/tikv/pd/pkg/schedule/operator"
 	"github.com/tikv/pd/pkg/utils/apiutil"
 	"github.com/tikv/pd/pkg/utils/testutil"
 	"github.com/tikv/pd/pkg/utils/typeutil"
@@ -169,7 +156,6 @@ func (suite *middlewareTestSuite) TestRequestInfoMiddleware() {
 	resp.Body.Close()
 	re.NoError(err)
 	re.Equal(http.StatusOK, resp.StatusCode)
-
 	re.Equal("Profile", resp.Header.Get("service-label"))
 	re.Equal("{\"seconds\":[\"1\"]}", resp.Header.Get("url-param"))
 	re.Equal("{\"testkey\":\"testvalue\"}", resp.Header.Get("body-param"))
@@ -1100,3 +1086,97 @@ func sendRequest(re *require.Assertions, url string, method string, statusCode i
 	resp.Body.Close()
 	return output
 }
+
+func TestDeleteAllRegionCacheScheduling(t *testing.T) {
+	re := require.New(t)
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	cluster, err := tests.NewTestCluster(ctx, 1)
+	re.NoError(err)
+	defer cluster.Destroy()
+
+	// 启动服务器
+	re.NoError(cluster.RunInitialServers())
+	re.NotEmpty(cluster.WaitLeader())
+
+	leaderServer := cluster.GetLeaderServer()
+	re.NotNil(leaderServer)
+
+	// 引导启动集群
+	re.NoError(leaderServer.BootstrapCluster())
+
+	rc := leaderServer.GetRaftCluster()
+	re.NotNil(rc)
+
+	// 准备测试数据：添加 stores
+	for i := uint64(1); i <= 3; i++ {
+		store := &metapb.Store{
+			Id:            i,
+			Address:       fmt.Sprintf("tikv%d", i),
+			State:         metapb.StoreState_Up,
+			NodeState:     metapb.NodeState_Serving,
+			LastHeartbeat: time.Now().UnixNano(),
+		}
+		tests.MustPutStore(re, cluster, store)
+	}
+
+	// 创建测试 region
+	region := &metapb.Region{
+		Id:       1,
+		StartKey: []byte(""),
+		EndKey:   []byte("b"),
+		RegionEpoch: &metapb.RegionEpoch{
+			ConfVer: 1,
+			Version: 1,
+		},
+		Peers: []*metapb.Peer{
+			{Id: 11, StoreId: 1, Role: metapb.PeerRole_Voter},
+			{Id: 12, StoreId: 2, Role: metapb.PeerRole_Voter},
+		},
+	}
+
+	// 创建 region 信息并模拟心跳
+	regionInfo := core.NewRegionInfo(region, region.Peers[0])
+
+	// 等待集群初始化完成
+	testutil.Eventually(re, func() bool {
+		return rc.GetCoordinator() != nil
+	})
+
+	// 发送 region 心跳
+	rc.HandleRegionHeartbeat(regionInfo)
+
+	// 等待 coordinator 准备完成
+	testutil.Eventually(re, func() bool {
+		return rc.GetCoordinator().GetPrepareChecker().IsPrepared()
+	}, testutil.WithWaitFor(10*time.Second))
+
+	// 等待调度器生成操作，增加超时时间和检查间隔
+	testutil.Eventually(re, func() bool {
+		count := rc.GetOperatorController().OperatorCount(operator.OpRegion)
+		t.Logf("current operator count: %d", count)
+		return count > 0
+	}, testutil.WithWaitFor(30*time.Second), testutil.WithTickInterval(500*time.Millisecond))
+
+	// 调用 API 删除 region cache
+	addr := leaderServer.GetAddr() + "/pd/api/v1/admin/cache/regions"
+	t.Logf("calling API: DELETE %s", addr)
+	output := sendRequest(re, addr, http.MethodDelete, http.StatusOK)
+	re.Empty(output)
+
+	// 验证调度被重置
+	re.Equal(0, int(rc.GetOperatorController().OperatorCount(operator.OpRegion)))
+
+	// 模拟持续的 region 心跳上报
+	for i := 0; i < 10; i++ {
+		rc.HandleRegionHeartbeat(regionInfo)
+		time.Sleep(100 * time.Millisecond)
+	}
+
+	// 验证调度器最终会重新生成调度操作
+	testutil.Eventually(re, func() bool {
+		count := rc.GetOperatorController().OperatorCount(operator.OpRegion)
+		t.Logf("final operator count: %d", count)
+		return count > 0
+	}, testutil.WithWaitFor(10*time.Second), testutil.WithTickInterval(500*time.Millisecond))
+}