diff --git a/src/inc/tsdb.h b/src/inc/tsdb.h
index 85f9b3bdc7f1cf806309f597ffad6955151b4c36..f7bab2fd733a4828bf9c11ffcf789286546618b2 100644
--- a/src/inc/tsdb.h
+++ b/src/inc/tsdb.h
@@ -314,6 +314,14 @@ void tsdbCleanupQueryHandle(TsdbQueryHandleT queryHandle);
  */
 void tsdbReportStat(void *repo, int64_t *totalPoints, int64_t *totalStorage, int64_t *compStorage);
 
+// ------------------ tsdbScan.c
+typedef void *STsdbScanH;
+
+STsdbScanH tsdbNewScanHandle();
+void       tsdbFreeScanHandle(STsdbScanH pScanH);
+void       tsdbSetScanLogStream(STsdbScanH pScanH, FILE *fLogStream);
+int        tsdbScanFGroup(STsdbScanH pScanH, char *rootDir, int fid);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/tsdb/inc/tsdbMain.h b/src/tsdb/inc/tsdbMain.h
index 256b8189f8fc69345b27fdf702fb705d22ac3c10..aa4ffabd0e77b502a662930b3c7c098701c016ef 100644
--- a/src/tsdb/inc/tsdbMain.h
+++ b/src/tsdb/inc/tsdbMain.h
@@ -562,16 +562,6 @@ STsdbMeta*  tsdbGetMeta(TSDB_REPO_T* pRepo);
 STsdbFileH* tsdbGetFile(TSDB_REPO_T* pRepo);
 int         tsdbCheckCommit(STsdbRepo* pRepo);
 
-// ------------------ tsdbScan.c
-int              tsdbScanFGroup(STsdbScanHandle* pScanHandle, char* rootDir, int fid);
-STsdbScanHandle* tsdbNewScanHandle();
-void             tsdbSetScanLogStream(STsdbScanHandle* pScanHandle, FILE* fLogStream);
-int              tsdbSetAndOpenScanFile(STsdbScanHandle* pScanHandle, char* rootDir, int fid);
-int              tsdbScanSCompIdx(STsdbScanHandle* pScanHandle);
-int              tsdbScanSCompBlock(STsdbScanHandle* pScanHandle, int idx);
-int              tsdbCloseScanFile(STsdbScanHandle* pScanHandle);
-void             tsdbFreeScanHandle(STsdbScanHandle* pScanHandle);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/tsdb/src/tsdbScan.c b/src/tsdb/src/tsdbScan.c
index 91f67878740c90d56a8c5c124be23c1f53e7da40..0f0d4bf52922d7a57b4cf3a8fbd49817a9ad843e 100644
--- a/src/tsdb/src/tsdbScan.c
+++ b/src/tsdb/src/tsdbScan.c
@@ -17,20 +17,9 @@
 
 #ifndef _TSDB_PLUGINS
 
-int tsdbScanFGroup(STsdbScanHandle* pScanHandle, char* rootDir, int fid) { return 0; }
-
-STsdbScanHandle* tsdbNewScanHandle() { return NULL; }
-
-void tsdbSetScanLogStream(STsdbScanHandle* pScanHandle, FILE* fLogStream) {}
-
-int tsdbSetAndOpenScanFile(STsdbScanHandle* pScanHandle, char* rootDir, int fid) { return 0; }
-
-int tsdbScanSCompIdx(STsdbScanHandle* pScanHandle) { return 0; }
-
-int tsdbScanSCompBlock(STsdbScanHandle* pScanHandle, int idx) { return 0; }
-
-int tsdbCloseScanFile(STsdbScanHandle* pScanHandle) { return 0; }
-
-void tsdbFreeScanHandle(STsdbScanHandle* pScanHandle) {}
+STsdbScanH tsdbNewScanHandle() { return NULL; }
+void       tsdbFreeScanHandle(STsdbScanH pScanHandle) {}
+void       tsdbSetScanLogStream(STsdbScanH pScanHandle, FILE *fLogStream) { return; }
+int        tsdbScanFGroup(STsdbScanH pScanHandle, char *rootDir, int fid) { return 0; }
 
 #endif
\ No newline at end of file