diff --git a/modelscope/utils/constant.py b/modelscope/utils/constant.py
index 6ef6b010..450738e8 100644
--- a/modelscope/utils/constant.py
+++ b/modelscope/utils/constant.py
@@ -48,7 +48,6 @@ class Tasks(object):
     dialog_intent_prediction = 'dialog-intent-prediction'
     table_question_answering = 'table-question-answering'
     feature_extraction = 'feature-extraction'
-    sentence_similarity = 'sentence-similarity'
     fill_mask = 'fill-mask'
     summarization = 'summarization'
     question_answering = 'question-answering'