diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ddff2a51c..016fd33a5a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - \#509 - IVF_PQ index build trapped into dead loop caused by invalid params
 - \#513 - Unittest DELETE_BY_RANGE sometimes failed
 - \#527 - faiss benchmark not compatible with faiss 1.6.0
+- \#530 - BuildIndex stop when do build index and search simultaneously
 
 ## Feature
 - \#12 - Pure CPU version for Milvus
diff --git a/core/src/scheduler/BuildMgr.h b/core/src/scheduler/BuildMgr.h
index 805c01aafd..3c466421a0 100644
--- a/core/src/scheduler/BuildMgr.h
+++ b/core/src/scheduler/BuildMgr.h
@@ -55,6 +55,11 @@ class BuildMgr {
         }
     }
 
+    int64_t
+    NumOfAvailable() {
+        return available_;
+    }
+
  private:
     std::int64_t available_;
     std::mutex mutex_;
diff --git a/core/src/scheduler/TaskTable.cpp b/core/src/scheduler/TaskTable.cpp
index 425eb0ab06..1bb6525215 100644
--- a/core/src/scheduler/TaskTable.cpp
+++ b/core/src/scheduler/TaskTable.cpp
@@ -178,7 +178,8 @@ TaskTable::PickToLoad(uint64_t limit) {
 
             // if task is a build index task, limit it
             if (task->Type() == TaskType::BuildIndexTask && task->path().Current() == "cpu") {
-                if (not BuildMgrInst::GetInstance()->Take()) {
+                if (BuildMgrInst::GetInstance()->NumOfAvailable() < 1) {
+                    SERVER_LOG_WARNING << "BuildMgr doesnot have available place for building index";
                     continue;
                 }
             }
diff --git a/core/src/scheduler/resource/Resource.cpp b/core/src/scheduler/resource/Resource.cpp
index 8cf03275f7..596d7da468 100644
--- a/core/src/scheduler/resource/Resource.cpp
+++ b/core/src/scheduler/resource/Resource.cpp
@@ -178,6 +178,10 @@ Resource::loader_function() {
             if (task_item == nullptr) {
                 break;
             }
+            if (task_item->task->Type() == TaskType::BuildIndexTask && name() == "cpu") {
+                BuildMgrInst::GetInstance()->Take();
+                SERVER_LOG_DEBUG << name() << " load BuildIndexTask";
+            }
             LoadFile(task_item->task);
             task_item->Loaded();
             if (task_item->from) {
@@ -208,7 +212,6 @@ Resource::executor_function() {
             if (task_item == nullptr) {
                 break;
             }
-
             auto start = get_current_timestamp();
             Process(task_item->task);
             auto finish = get_current_timestamp();