diff --git a/configs/sparsification/methods/SparseVLM/sparsevlm_multi_turn.yml b/configs/sparsification/methods/SparseVLM/sparsevlm_multi_turn.yml
new file mode 100644
index 00000000..2fc436d7
--- /dev/null
+++ b/configs/sparsification/methods/SparseVLM/sparsevlm_multi_turn.yml
@@ -0,0 +1,29 @@
+base:
+    seed: &seed 42
+model:
+    type: Llava
+    path: model path
+    torch_dtype: auto
+eval:
+    eval_pos: [transformed] # transformed
+    name: custom_gen
+    type: just_infer
+    download: False
+    path: /data/nvme1/yongyang/projects/llmc_plus/general_custom_data
+    apply_chat_template: True
+    bs: 1
+    inference_per_block: False
+    max_new_tokens: 512
+    statistics: False
+sparse:
+    method: TokenReduction
+    special:
+        method: SparseVLM
+        pruning_loc: [2, 6, 15]
+        retained_tokens: 192
+        prune_flag: True
+        merge_flag: True
+save:
+    save_trans: False
+    save_fake: False
+    save_path: /path/to/save/
diff --git a/llmc/compression/token_reduction/fastv.py b/llmc/compression/token_reduction/fastv.py
index ecafde5a..8a699845 100644
--- a/llmc/compression/token_reduction/fastv.py
+++ b/llmc/compression/token_reduction/fastv.py
@@ -90,6 +90,12 @@ def fastv_pruning_hook(module, args, kwargs, pruning_paras):
             top_attention_rank_index = \
                 last_layer_attention_avg_last_tok_image.topk(
                     round(image_token_length * (1 - rate))).indices + image_token_start_index
+
+            if self.model.first_turn_question:
+                module.register_buffer('top_attention_rank_index', top_attention_rank_index)
+            else:
+                top_attention_rank_index = module.top_attention_rank_index
+
             # keep index
             keep_indexs = torch.cat(
                 (
diff --git a/llmc/compression/token_reduction/random.py b/llmc/compression/token_reduction/random.py
index 9d71084f..d6dfde1d 100644
--- a/llmc/compression/token_reduction/random.py
+++ b/llmc/compression/token_reduction/random.py
@@ -76,23 +76,22 @@ def random_pruning_hook(module, args, kwargs, pruning_paras):
 
             device = hidden_states.device
 
+            vision_indexes = torch.arange(
+                image_token_start_index,
+                image_token_start_index + image_token_length,
+                device=device,
+            )
             if self.model.first_turn_question:
-                logger.info(' -----first_turn_question-----')
-                vision_indexes = torch.arange(
-                    image_token_start_index,
-                    image_token_start_index + image_token_length,
-                    device=device,
-                )
                 num_keep = round(image_token_length * (1 - rate))
                 rand_idx = torch.randperm(image_token_length, device=device)[:num_keep]
                 vision_indexes = vision_indexes[rand_idx]
 
-                # save vision_indexes to module
-                module.register_buffer('vision_indexes', vision_indexes)
+                # save rand_idx to module
+                module.register_buffer('rand_idx', rand_idx)
             else:
-                logger.info(' -----not first_turn_question-----')
                 # load vision_indexes from module (prompt cache)
-                vision_indexes = module.vision_indexes
+                rand_idx = module.rand_idx
+                vision_indexes = vision_indexes[rand_idx]
 
             # keep index
             keep_indexs = torch.cat(
diff --git a/llmc/compression/token_reduction/sparsevlm.py b/llmc/compression/token_reduction/sparsevlm.py
index 22269cf7..f91c9564 100755
--- a/llmc/compression/token_reduction/sparsevlm.py
+++ b/llmc/compression/token_reduction/sparsevlm.py
@@ -251,6 +251,13 @@ def decoder_attn_hook(module, inputs, kwargs, layer_outputs, pruning_pars, layer
                 text_token_start = prompt_length + image_shape
                 policy[batch, text_token_start:] = 1
 
+            if self.model.first_turn_question:
+                vision_mask = policy[:, v_token_start:v_token_start + v_token_num]
+                module.register_buffer('vision_mask', vision_mask)
+            else:
+                vision_mask = module.vision_mask
+                policy[:, v_token_start:v_token_start + v_token_num] = vision_mask
+
             total_sparse_token_idx = torch.where(policy == 0)[1].unsqueeze(0)
 
             # merge and cluster
diff --git a/llmc/compression/token_reduction/visionzip.py b/llmc/compression/token_reduction/visionzip.py
index f72580a5..5109b478 100755
--- a/llmc/compression/token_reduction/visionzip.py
+++ b/llmc/compression/token_reduction/visionzip.py
@@ -323,6 +323,12 @@ def visionzip_hook(m, images, image_forward_outs):
             mask = torch.ones_like(
                 hidden_states[:, :, 0], dtype=torch.bool, device=metric.device
             ).scatter_(1, all_indices, False)
+
+            if self.model.first_turn_question:
+                m.register_buffer('mask', mask)
+            else:
+                mask = m.mask
+
             dominant_tokens = hidden_states.masked_select(~mask.unsqueeze(-1)).view(
                 hidden_states.shape[0], dominant_num + 1, hidden_states.shape[2]
             )
diff --git a/llmc/models/llava.py b/llmc/models/llava.py
index c1bfbce3..8b74812a 100644
--- a/llmc/models/llava.py
+++ b/llmc/models/llava.py
@@ -75,6 +75,7 @@ def build_model(self):
             'IMAGE_TOKEN_INDEX': IMAGE_TOKEN_INDEX,  # for llava
         }
         self.processor = None
+        self.first_turn_question = True
 
     def get_extra_rot_module_besides_embed_layers(self):
         return [self.vision_projector[2]]
@@ -163,8 +164,6 @@ def load_images(image_files):
                 out.append(image)
             return out
 
-        self.first_turn_question = True
-
         for data_idx, questions in enumerate(img_qas):
             self.first_turn_question = True