diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc
index 496ae461d2f..2f3425a2320 100644
--- a/sql/sql_prepare.cc
+++ b/sql/sql_prepare.cc
@@ -3039,6 +3039,19 @@ reexecute:
   if (!check_parameter_types()) {
     // Only one reprepare is required in case of parameter mismatch
     assert(!reprepared_for_types);
+    /**
+     * Infinite loop protection mechanism.
+     * 
+     * When prepared statement parameter types mismatch, re-preparation should be triggered.
+     * However, if types still mismatch after re-preparation, it may lead to infinite loops.
+     * 
+     * DEBUG mode: Assert failure to generate core dump for development debugging
+     * RELEASE mode: Return error code to ensure service stability
+     */
+    if (unlikely(reprepared_for_types)) {
+      my_error(ER_UNKNOWN_ERROR, MYF(0));
+      return true;
+    }
     reprepared_for_types = true;
     if (reprepare(thd)) return true;
     goto reexecute;