diff --git a/src/observer/table_load/ob_table_load_trans_store.cpp b/src/observer/table_load/ob_table_load_trans_store.cpp
index 1942f4ddb9..b91ce4ec33 100644
--- a/src/observer/table_load/ob_table_load_trans_store.cpp
+++ b/src/observer/table_load/ob_table_load_trans_store.cpp
@@ -508,7 +508,7 @@ static int check_lob_is_inrow(const ObObj &obj, const int64_t lob_inrow_threshol
   int ret = OB_SUCCESS;
   is_inrow = false;
   ObLobManager *lob_mngr = MTL(ObLobManager*);
-  if (OB_UNLIKELY(!obj.is_lob_storage() || lob_inrow_threshold <= 0)) {
+  if (OB_UNLIKELY(!obj.is_lob_storage() || lob_inrow_threshold < 0)) {
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("invalid args", KR(ret), K(obj), K(lob_inrow_threshold));
   } else if (OB_ISNULL(lob_mngr)) {
@@ -518,7 +518,10 @@ static int check_lob_is_inrow(const ObObj &obj, const int64_t lob_inrow_threshol
     ObString data = obj.get_string();
     const bool set_has_lob_header = data.length() > 0;
     ObLobLocatorV2 src(data, set_has_lob_header);
-    if (src.has_inrow_data() && lob_mngr->can_write_inrow(data.length(), lob_inrow_threshold)) {
+    int64_t byte_len = 0;
+    if (OB_FAIL(src.get_lob_data_byte_len(byte_len))) {
+      LOG_WARN("fail to get lob data byte len", K(ret), K(src));
+    } else if (src.has_inrow_data() && lob_mngr->can_write_inrow(byte_len, lob_inrow_threshold)) {
       is_inrow = true;
     } else {
       is_inrow = false;
diff --git a/src/storage/lob/ob_lob_util.cpp b/src/storage/lob/ob_lob_util.cpp
index 6761e99379..44a6aa540e 100644
--- a/src/storage/lob/ob_lob_util.cpp
+++ b/src/storage/lob/ob_lob_util.cpp
@@ -205,7 +205,10 @@ int ObInsertLobColumnHelper::insert_lob_column(ObIAllocator &allocator,
     // datum with null ptr and zero len should treat as no lob header
     bool set_has_lob_header = has_lob_header && data.length() > 0;
     ObLobLocatorV2 src(data, set_has_lob_header);
-    if (src.has_inrow_data() && lob_mngr->can_write_inrow(data.length(), lob_storage_param.inrow_threshold_)) {
+    int64_t byte_len = 0;
+    if (OB_FAIL(src.get_lob_data_byte_len(byte_len))) {
+      LOG_WARN("fail to get lob data byte len", K(ret), K(src));
+    } else if (src.has_inrow_data() && lob_mngr->can_write_inrow(byte_len, lob_storage_param.inrow_threshold_)) {
       // fast path for inrow data
       if (OB_FAIL(src.get_inrow_data(data))) {
         LOG_WARN("fail to get inrow data", K(ret), K(src));
@@ -307,7 +310,7 @@ int ObInsertLobColumnHelper::insert_lob_column(ObIAllocator &allocator,
     int64_t byte_len = 0;
     if (OB_FAIL(src.get_lob_data_byte_len(byte_len))) {
       LOG_WARN("fail to get lob data byte len", K(ret), K(src));
-    } else if (src.has_inrow_data() && lob_mngr->can_write_inrow(data.length(), lob_storage_param.inrow_threshold_)) {
+    } else if (src.has_inrow_data() && lob_mngr->can_write_inrow(byte_len, lob_storage_param.inrow_threshold_)) {
       // do fast inrow
       if (OB_FAIL(src.get_inrow_data(data))) {
         LOG_WARN("fail to get inrow data", K(ret), K(src));