diff --git a/fastdeploy/engine/common_engine.py b/fastdeploy/engine/common_engine.py
index 0bf1cdf39..dc13c74f0 100644
--- a/fastdeploy/engine/common_engine.py
+++ b/fastdeploy/engine/common_engine.py
@@ -527,8 +527,14 @@ class EngineSevice:
                 self.cfg.max_prefill_batch,
             )
 
+            if self.cfg.model_config.enable_mm:
+                self.resource_manager.check_and_free_block_tables()
+                available_blocks = self.resource_manager.available_block_num()
+            else:
+                available_blocks = self.cfg.cache_config.max_block_num_per_seq
+
             tasks = self.scheduler.get_requests(
-                available_blocks=self.cfg.cache_config.max_block_num_per_seq,
+                available_blocks=available_blocks,
                 block_size=self.cfg.cache_config.block_size,
                 reserved_output_blocks=self.cfg.cache_config.enc_dec_block_num,
                 max_num_batched_tokens=self.cfg.max_model_len,