diff --git a/session/tidb.go b/session/tidb.go
index eaa5aedfbe39d..1d70c164aa7e9 100644
--- a/session/tidb.go
+++ b/session/tidb.go
@@ -209,11 +209,14 @@ func runStmt(ctx context.Context, sctx sessionctx.Context, s sqlexec.Statement)
 		defer span1.Finish()
 	}
 	se := sctx.(*session)
+	sessVars := se.GetSessionVars()
+	// Save origTxnCtx here to avoid it reset in the transaction retry.
+	origTxnCtx := sessVars.TxnCtx
 	defer func() {
 		// If it is not a select statement, we record its slow log here,
 		// then it could include the transaction commit time.
 		if rs == nil {
-			s.(*executor.ExecStmt).LogSlowQuery(se.GetSessionVars().TxnCtx.StartTS, err != nil)
+			s.(*executor.ExecStmt).LogSlowQuery(origTxnCtx.StartTS, err != nil)
 		}
 	}()
 
@@ -222,7 +225,6 @@ func runStmt(ctx context.Context, sctx sessionctx.Context, s sqlexec.Statement)
 		return nil, err
 	}
 	rs, err = s.Exec(ctx)
-	sessVars := se.GetSessionVars()
 	// All the history should be added here.
 	sessVars.TxnCtx.StatementCount++
 	if !s.IsReadOnly(sessVars) {