diff --git a/tools/backtest.sh b/tools/backtest.sh
index d42bbfee..0934f4c3 100755
--- a/tools/backtest.sh
+++ b/tools/backtest.sh
@@ -121,21 +121,20 @@ if [ -z "$END_DATE_RAW" ]; then
 fi
 
 # Parse dates
+START_DATE_STR=""
+END_DATE_STR=""
+
 if [[ "$START_DATE_RAW" == *" "* ]]; then
-  START_DATE_TS=$(date -d "$START_DATE_RAW" +"%s")
   START_DATE_STR=$(date -d "$START_DATE_RAW" +"%Y-%m-%d")
 else
-  # 兼容旧格式：20260118 -> 转换为 2026-01-18 00:00:00 再转为时间戳和日期字符串
-  START_DATE_TS=$(date -d "${START_DATE_RAW:0:4}-${START_DATE_RAW:4:2}-${START_DATE_RAW:6:2} 00:00:00" +"%s")
+  # 兼容旧格式：20260118 -> 转换为 2026-01-18
   START_DATE_STR="${START_DATE_RAW:0:4}-${START_DATE_RAW:4:2}-${START_DATE_RAW:6:2}"
 fi
 
 if [[ "$END_DATE_RAW" == *" "* ]]; then
-  END_DATE_TS=$(date -d "$END_DATE_RAW" +"%s")
   END_DATE_STR=$(date -d "$END_DATE_RAW" +"%Y-%m-%d")
 else
-  # 兼容旧格式：20260218 -> 转换为 2026-02-18 00:00:00 再转为时间戳和日期字符串
-  END_DATE_TS=$(date -d "${END_DATE_RAW:0:4}-${END_DATE_RAW:4:2}-${END_DATE_RAW:6:2} 00:00:00" +"%s")
+  # 兼容旧格式：20260218 -> 转换为 2026-02-18
   END_DATE_STR="${END_DATE_RAW:0:4}-${END_DATE_RAW:4:2}-${END_DATE_RAW:6:2}"
 fi
 
@@ -204,6 +203,11 @@ rm result/*
 
 hyperopt_config="${STRATEGY_NAME%.py}.json"
 
+# Debug: Print date variables to check format
+echo "DEBUG: START_DATE_STR = '$START_DATE_STR'"
+echo "DEBUG: END_DATE_STR = '$END_DATE_STR'"
+echo "DEBUG: Timerange format would be: $START_DATE_STR-$END_DATE_STR"
+
 echo "docker-compose run --rm freqtrade backtesting $PAIRS_FLAG \
   --logfile /freqtrade/user_data/logs/freqtrade.log \
   --freqaimodel $FREQAI_MODEL \
@@ -211,7 +215,7 @@ echo "docker-compose run --rm freqtrade backtesting $PAIRS_FLAG \
   --config /freqtrade/config_examples/$CONFIG_FILE \
   --strategy-path /freqtrade/templates \
   --strategy $STRATEGY_NAME \
-  --timerange $START_DATE-$END_DATE \
+  --timerange $START_DATE_STR-$END_DATE_STR \
   --fee 0.0008 \
   --breakdown day \
   --cache none >output.log"