diff --git a/tests/test-all.sh b/tests/test-all.sh
index 7bde698d9531738949d2fd396d6d8817bd431ce7..3c8aed7d186aab0038103fe50d57137d79db08e2 100755
--- a/tests/test-all.sh
+++ b/tests/test-all.sh
@@ -28,23 +28,21 @@ function dohavecore(){
   proc=`echo $corefile|cut -d "_" -f3`
   if [ -n "$corefile" ];then
     echo 'taosd or taos has generated core'
+    rm case.log
     if [[ "$tests_dir" == *"$IN_TDINTERNAL"* ]] && [[ $1 == 1 ]]; then
       cd ../../../
       tar -zcPf $corepath'taos_'`date "+%Y_%m_%d_%H_%M_%S"`.tar.gz debug/build/bin/taosd debug/build/bin/tsim debug/build/lib/libtaos*so*
       if [[ $2 == 1 ]];then
         cp -r sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S"`
-        rm -rf sim/case.log
       else
         cd community
         cp -r sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
-        rm -rf sim/case.log
       fi
     else 
       cd ../../
       if [[ $1 == 1 ]];then 
         tar -zcPf $corepath'taos_'`date "+%Y_%m_%d_%H_%M_%S"`.tar.gz debug/build/bin/taosd debug/build/bin/tsim debug/build/lib/libtaos*so*
         cp -r sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
-        rm -rf sim/case.log
       fi
     fi
     if [[ $1 == 1 ]];then
@@ -95,26 +93,25 @@ function runSimCaseOneByOnefq {
       date +%F\ %T | tee -a out.log
       if [[ "$tests_dir" == *"$IN_TDINTERNAL"* ]]; then
         echo -n $case
-        ./test.sh -f $case > ../../../sim/case.log 2>&1 && \
+        ./test.sh -f $case > case.log 2>&1 && \
         ( grep -q 'script.*'$case'.*failed.*, err.*lineNum' ../../../sim/tsim/log/taoslog0.0 && echo -e "${RED} failed${NC}" | tee -a out.log  ||  echo -e "${GREEN} success${NC}" | tee -a out.log )|| \
         ( grep -q 'script.*success.*m$' ../../../sim/tsim/log/taoslog0.0 && echo -e "${GREEN} success${NC}" | tee -a out.log )  || \
-        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' && cat ../../../sim/case.log )
+        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' && cat case.log )
       else
         echo -n $case
         ./test.sh -f $case > ../../sim/case.log 2>&1 && \
         ( grep -q 'script.*'$case'.*failed.*, err.*lineNum' ../../sim/tsim/log/taoslog0.0 && echo -e "${RED} failed${NC}" | tee -a out.log  ||  echo -e "${GREEN} success${NC}" | tee -a out.log )|| \
         ( grep -q 'script.*success.*m$' ../../sim/tsim/log/taoslog0.0 && echo -e "${GREEN} success${NC}" | tee -a out.log )  || \
-        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' &&  cat ../../sim/case.log )
+        ( echo -e "${RED} failed${NC}" | tee -a out.log && echo '=====================log=====================' &&  cat case.log )
       fi
       
       out_log=`tail -1 out.log  `
       if [[ $out_log =~ 'failed' ]];then
+        rm case.log
         if [[ "$tests_dir" == *"$IN_TDINTERNAL"* ]]; then
           cp -r ../../../sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S"`
-          rm -rf ../../../sim/case.log
         else 
           cp -r ../../sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
-          rm -rf ../../sim/case.log
         fi
         dohavecore $2 1
         if [[ $2 == 1 ]];then
@@ -180,7 +177,7 @@ function runPyCaseOneByOnefq() {
         start_time=`date +%s`
         date +%F\ %T | tee -a pytest-out.log
         echo -n $case
-        $line > ../../sim/case.log 2>&1 && \
+        $line > case.log 2>&1 && \
           echo -e "${GREEN} success${NC}" | tee -a pytest-out.log || \
           echo -e "${RED} failed${NC}" | tee -a pytest-out.log 
         end_time=`date +%s`
@@ -188,8 +185,8 @@ function runPyCaseOneByOnefq() {
         if [[ $out_log =~ 'failed' ]];then
           cp -r ../../sim ~/sim_`date "+%Y_%m_%d_%H:%M:%S" `
           echo '=====================log===================== '
-          cat ../../sim/case.log
-          rm -rf ../../sim/case.log
+          cat case.log
+          rm -rf case.log
           dohavecore $2 2
           if [[ $2 == 1 ]];then
             exit 8