diff --git a/backend/services/ai_service.py b/backend/services/ai_service.py
index a7097c7..7e6162d 100644
--- a/backend/services/ai_service.py
+++ b/backend/services/ai_service.py
@@ -194,7 +194,7 @@ def _save_report(trade_date: str, content: str, summary: str, tools_used: list,
 
 
 def _get_prev_report_section(trade_date: str) -> str:
-    """获取前一个交易日的报告摘要，用于上下文参考"""
+    """获取前一个交易日的报告，用于上下文参考"""
     conn = get_connection()
     try:
         row = conn.execute(
@@ -205,13 +205,9 @@ def _get_prev_report_section(trade_date: str) -> str:
             return ""
         prev_date = row["trade_date"]
         prev_content = row["content"] or ""
-        # 取报告的前1500字符作为参考上下文
-        truncated = prev_content[:1500]
-        if len(prev_content) > 1500:
-            truncated += "\n...(已截断)"
         return f"""以下是前一个交易日（{prev_date}）的分析报告，请参考其中的分析逻辑和关注方向，结合今日数据进行对比分析：
 
-{truncated}
+{prev_content}
 
 ---
 """