diff --git a/expression/builtin_time_vec.go b/expression/builtin_time_vec.go
index 71ff6f395dcd6..186c407a4d696 100644
--- a/expression/builtin_time_vec.go
+++ b/expression/builtin_time_vec.go
@@ -964,12 +964,11 @@ func (b *builtinMicroSecondSig) vecEvalInt(input *chunk.Chunk, result *chunk.Col
 	result.ResizeInt64(n, false)
 	result.MergeNulls(buf)
 	i64s := result.Int64s()
-	ds := buf.GoDurations()
 	for i := 0; i < n; i++ {
 		if result.IsNull(i) {
 			continue
 		}
-		i64s[i] = int64((ds[i] % time.Second) / time.Microsecond)
+		i64s[i] = int64(buf.GetDuration(i, int(types.UnspecifiedFsp)).MicroSecond())
 	}
 	return nil
 }
diff --git a/expression/integration_test.go b/expression/integration_test.go
index e2f620da24811..b4e25560d9753 100644
--- a/expression/integration_test.go
+++ b/expression/integration_test.go
@@ -10198,3 +10198,16 @@ func (s *testIntegrationSuite) TestIssue28643(c *C) {
 	tk.MustExec("set tidb_enable_vectorized_expression = off;")
 	tk.MustQuery("select hour(a) from t;").Check(testkit.Rows("838", "838"))
 }
+
+func (s *testIntegrationSuite) TestIssue29244(c *C) {
+	tk := testkit.NewTestKit(c, s.store)
+	tk.MustExec("use test")
+	tk.MustExec("drop table if exists t")
+	tk.MustExec("create table t(a time(4));")
+	tk.MustExec("insert into t values(\"-700:10:10.123456111\");")
+	tk.MustExec("insert into t values(\"700:10:10.123456111\");")
+	tk.MustExec("set tidb_enable_vectorized_expression = on;")
+	tk.MustQuery("select microsecond(a) from t;").Check(testkit.Rows("123500", "123500"))
+	tk.MustExec("set tidb_enable_vectorized_expression = off;")
+	tk.MustQuery("select microsecond(a) from t;").Check(testkit.Rows("123500", "123500"))
+}