diff --git a/EduNLP/SIF/sif.py b/EduNLP/SIF/sif.py
index 9c7bb3d6..70a8404e 100644
--- a/EduNLP/SIF/sif.py
+++ b/EduNLP/SIF/sif.py
@@ -97,7 +97,7 @@ def to_sif(item, check_formula=True, parser: Parser = None):
 
 
 def sif4sci(item: str, figures: (dict, bool) = None, mode: int = 2, symbol: str = None, tokenization=True,
-            tokenization_params=None, errors="raise"):
+            tokenization_params=None, convert_image_to_latex=False, errors="raise"):
     r"""
 
     Default to use linear Tokenizer, change the tokenizer by specifying tokenization_params
@@ -260,7 +260,7 @@ def sif4sci(item: str, figures: (dict, bool) = None, mode: int = 2, symbol: str
                 "Unknown mode %s, use only 0 or 1 or 2." % mode
             )
 
-        ret = seg(item, figures, symbol)
+        ret = seg(item, figures, symbol, convert_image_to_latex)
 
         if tokenization is True:
             ret = tokenize(ret, **(tokenization_params if tokenization_params is not None else {}))
diff --git a/EduNLP/Tokenizer/tokenizer.py b/EduNLP/Tokenizer/tokenizer.py
index f9e755d7..8bd0215b 100644
--- a/EduNLP/Tokenizer/tokenizer.py
+++ b/EduNLP/Tokenizer/tokenizer.py
@@ -56,7 +56,8 @@ def __call__(self, items: Iterable, key=lambda x: x, **kwargs):
         for item in items:
             yield self._tokenize(item, key=key, **kwargs)
 
-    def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None, **kwargs):
+    def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None,
+                  convert_image_to_latex=False, **kwargs):
         """Tokenize one item, return token list
 
         Parameters
@@ -67,7 +68,8 @@ def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None,
             determine how to get the text of item, by default lambdax: x
         """
         symbol = self.symbol if symbol is None else symbol
-        return tokenize(seg(key(item), symbol=symbol, figures=self.figures),
+        return tokenize(seg(key(item), symbol=symbol, figures=self.figures,
+                            convert_image_to_latex=convert_image_to_latex),
                         **self.tokenization_params, **kwargs).tokens
 
 
@@ -191,9 +193,11 @@ def __call__(self, items: Iterable, key=lambda x: x, **kwargs):
         for item in items:
             yield self._tokenize(item, key=key, **kwargs)
 
-    def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None, **kwargs):
+    def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None,
+                  convert_image_to_latex=False, **kwargs):
         symbol = self.symbol if symbol is None else symbol
-        return tokenize(seg(key(item), symbol=symbol), **self.tokenization_params, **kwargs).tokens
+        return tokenize(seg(key(item), symbol=symbol, convert_image_to_latex=convert_image_to_latex),
+                        **self.tokenization_params, **kwargs).tokens
 
 
 class AstFormulaTokenizer(Tokenizer):
@@ -235,11 +239,13 @@ def __call__(self, items: Iterable, key=lambda x: x, **kwargs):
         for item in items:
             yield self._tokenize(item, key=key, **kwargs)
 
-    def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None, **kwargs):
+    def _tokenize(self, item: Union[str, dict], key=lambda x: x, symbol: str = None,
+                  convert_image_to_latex=False, **kwargs):
         mode = kwargs.pop("mode", 0)
         symbol = self.symbol if symbol is None else symbol
         ret = sif4sci(key(item), figures=self.figures, mode=mode, symbol=symbol,
-                      tokenization_params=self.tokenization_params, errors="ignore", **kwargs)
+                      tokenization_params=self.tokenization_params, convert_image_to_latex=convert_image_to_latex,
+                      errors="ignore", **kwargs)
         ret = [] if ret is None else ret.tokens
         return ret