diff --git a/tilelang/jit/kernel.py b/tilelang/jit/kernel.py
index de935d996..1629178b8 100644
--- a/tilelang/jit/kernel.py
+++ b/tilelang/jit/kernel.py
@@ -637,8 +637,17 @@ def export_library(self, kernel_file: str) -> None:
         # rt_module: use export_library to export
         # rt_params: use cloudpickle to serialize
 
-        # Export the compiled kernel function to a shared library file.
-        self.rt_module.export_library(kernel_file)
+        if self.artifact is None or self.artifact.rt_mod is None:
+            raise AttributeError(
+                'Runtime module is not available. Please compile the kernel with `execution_backend="tvm_ffi"` before exporting.'
+            )
+
+        dir_path = os.path.dirname(kernel_file)
+        if dir_path:
+            os.makedirs(dir_path, exist_ok=True)
+
+        self.artifact.rt_mod.export_library(kernel_file)
+        logger.info(f"Kernel library exported to {os.path.abspath(kernel_file)}")
 
     def _get_ptx(self, verbose: bool | None = None) -> str:
         """