diff --git a/backend/.env.example b/backend/.env.example
index f75f50c..855d9d7 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -1,8 +1,3 @@
-JIEBA_DATA=./nltk_data
-NLTK_DATA=./nltk_data
-SQLITE_DATABASE_URL=sqlite:///./source.db
-DATA_SOURCE_CACHE=./restapi
-
 # The Llama Cloud API key.
 # LLAMA_CLOUD_API_KEY=
 SQL_DATABASE_URL=mysql+pymysql://zjinfo1:Dy2Bcr53Hm5xRkba@110.42.234.166:3306/zjinfo1
@@ -20,11 +15,17 @@ HYBRID_ALPHA = 0.6
 RERANK_ENABLED=true
 
 #----------   rerank- Xinference    ----------------
-RERANK_PROVIDER=xinference
-RERANK_MODEL=bge-reranker-v2-m3
-RERANK_BASE_URL=http://10.1.16.39:9995
+#RERANK_PROVIDER=xinference
+#RERANK_MODEL=bge-reranker-v2-m3
+#RERANK_BASE_URL=http://10.1.16.39:9995
+#RERANK_TOP_N=5
+#RERANK_THRESHOLD=0.3
+
+
+#----------   rerank- ollama    ----------------
+RERANK_PROVIDER=ollama
+RERANK_MODEL= /models/bge-reranker-base
 RERANK_TOP_N=5
-RERANK_THRESHOLD=0.3
 
 #----------   model - Xinference    ----------------
 #MODEL_PROVIDER=xinference
@@ -37,15 +38,19 @@ RERANK_THRESHOLD=0.3
 #----------   model - dashscope    ----------------
 MODEL_PROVIDER=dashscope
 DASHSCOPE_API_KEY=sk-221d2d202e104618a56002ce2e7dc0d0
-MODEL=qwen-max
+MODEL=qwen2-math-72b-instruct
 
 
 
 #----------   embedding - Xinference    ----------------
-EMBEDDING_PROVIDER=xinference
-EMBEDDING_MODEL=bge-m3
-EMBEDDING_BASE_URL=http://10.1.16.39:9995
-EMBEDDING_DIM=1024
+#EMBEDDING_PROVIDER=xinference
+#EMBEDDING_MODEL=bge-m3
+#EMBEDDING_BASE_URL=http://10.1.16.39:9995
+#EMBEDDING_DIM=1024
+
+----------   embedding - dashscope    ----------------
+EMBEDDING_PROVIDER=dashscope
+EMBEDDING_MODEL=text-embedding-v1
 
 
 # The questions to help users get started (multi-line).
@@ -73,7 +78,7 @@ BM_RETRIEVER_PATH =./storage_bm
 
 
 PHOENIX_API_KEY=123456
-PHOENIX_URL=http://10.1.6.103:6006/v1/traces
+PHOENIX_URL=http://localhost:6006/v1/traces
 PHOENIX_PROJECT_NAME=ly_zjapp
 #OTEL_SERVICE_NAME=ly_zjapp
 #OTEL_RESOURCE_ATTRIBUTES=openinference.project.name=ly_zjapp
@@ -101,4 +106,7 @@ SYSTEM_PROMPT="You are a weather forecast agent. You help users to get the weath
 PRJTOJSON_URL = 'http://10.1.6.60:8092'
 PROJECT_TITLE = "您好，我是博微工程理解小助手，您可以问我有关[线路工程]工程数据的相关问题！"
 
-CHAT_UPLOAD_FILECACHE = "./output/uploaded"
\ No newline at end of file
+CHAT_UPLOAD_FILECACHE = "./output/uploaded"
+
+JIEBA_DATA=./nltk_data
+NLTK_DATA=./nltk_data
\ No newline at end of file