diff --git a/vllm_ascend/attention/attention_v1.py b/vllm_ascend/attention/attention_v1.py
index 6181631d..7a1f79a4 100644
--- a/vllm_ascend/attention/attention_v1.py
+++ b/vllm_ascend/attention/attention_v1.py
@@ -127,7 +127,7 @@ class AscendAttentionBackend(AttentionBackend):
 
     @staticmethod
     def get_supported_block_size() -> list[int]:
-        return [64]
+        return [128]
 
 
 class AscendAttentionState(Enum):
diff --git a/vllm_ascend/patch/platform/patch_mamba_config.py b/vllm_ascend/patch/platform/patch_mamba_config.py
index ad083f51..1b077b41 100644
--- a/vllm_ascend/patch/platform/patch_mamba_config.py
+++ b/vllm_ascend/patch/platform/patch_mamba_config.py
@@ -58,7 +58,7 @@ def verify_and_update_config(cls, vllm_config) -> None:
         block_size=model_config.max_model_len,
     ).page_size_bytes
 
-    block_alignment_bytes = 64
+    block_alignment_bytes = 128
 
     # some attention backends (e.g. FA) only support setting
     # block size to multiple of 16, so let's suggest a value