diff --git a/mindspore/profiler/parser/step_trace_parser.py b/mindspore/profiler/parser/step_trace_parser.py
index 9e3e005b2b..3429a59a7a 100644
--- a/mindspore/profiler/parser/step_trace_parser.py
+++ b/mindspore/profiler/parser/step_trace_parser.py
@@ -22,7 +22,7 @@ from collections import namedtuple
 from decimal import Decimal
 
 from mindspore.profiler.common.exceptions.exceptions import ProfilerPathErrorException, \
-    JobIdMismatchException, ProfilerIOException
+    JobIdMismatchException, ProfilerIOException, ProfilerRawFileException
 from mindspore import log
 from mindspore.profiler.common.util import get_summary_for_step_trace
 from mindspore.profiler.common.validator.validate_path import \
@@ -400,13 +400,25 @@ class GpuStepTraceParser(BaseStepTraceParser):
         fp_start, bp_end, iter_end, iter_start = 0, 1, 2, 3
         reduce_start = 4
         start_time, end_time = 0, 1
+        STEP_TRACE_POINT_COUNT = 3
 
         source_file = validate_and_normalize_path(source_file)
         try:
             with open(source_file, 'r') as f:
                 lines = f.readlines()
+                if len(lines) < STEP_TRACE_POINT_COUNT:
+                    raise ProfilerRawFileException(
+                        f"Failed to parse {source_file} file. The FP_POINT/BP_POINT/ITER_END_POINT "
+                        f"do not recognized correctly. Try to set the environment variable'PROFILING_FP_START' "
+                        f"and 'PROFILING_BP_END' to solve this problem. For example, "
+                        f"'export PROFILING_FP_START=Defualt/xxx/Conv2d-op1' ")
                 step_trace_info_all = [line.strip().split()[1:] for line in lines]
                 num_of_step = len(step_trace_info_all[0])
+                for step_trace_point in step_trace_info_all:
+                    if len(step_trace_point) != num_of_step:
+                        raise ProfilerRawFileException(
+                            f"Failed to parse {source_file} file. Due to the profiled "
+                            f"step_num of FP/BP/ITER_END Point are not equal")
                 iter_start_info = [step_trace_info_all[fp_start][0]] + \
                     step_trace_info_all[iter_end][:num_of_step]
                 step_trace_info_all.insert(iter_start, iter_start_info)
diff --git a/mindspore/profiler/profiling.py b/mindspore/profiler/profiling.py
index abda9890f8..1f3fdd15be 100644
--- a/mindspore/profiler/profiling.py
+++ b/mindspore/profiler/profiling.py
@@ -130,7 +130,7 @@ class Profiler:
             profiling_options = json.dumps(profiling_options)
             # Characters longer than 2048 are ignored, resulting in profiling option resolution errors
             if len(profiling_options) > 2048:
-                raise ValueError("The parameter length exceeds the limit (2048)")
+                raise ValueError("The parameter length exceeds the limit (2048), please input valid parameters.")
             # use context interface to open profiling, for the new mindspore version(after 2020.5.21)
             context.set_context(enable_profiling=True, profiling_options=profiling_options)
 
@@ -369,36 +369,30 @@ class Profiler:
             return self._profiling_job_id
 
         job_id = ""
-        cmd = "ls -t " + self._output_path + "|grep JOB|awk '{print $1}'"
-        r = os.popen(cmd)
-        profiling_job_dirs = r.readlines()
-        r.close()
-        for item in profiling_job_dirs:
-            path = os.path.join(self._output_path, item.strip())
-            log_file = get_file_names(path, "host_start.log")
-            if not log_file:
-                logger.error("Profiling: job path %s, host_start.log not exist.", path)
-                continue
-
-            log_file = os.path.join(path, log_file[0])
-            item_dict = self._parse_host_start_log(log_file)
-
-            if not item_dict:
-                logger.error("Profiling: job path %s, fail to get job start info.", path)
-                continue
-
-            if self._dev_id != item_dict["device_id"]:
-                logger.info("Profiling: job path %s, dev id %s, training device id %s.",
-                            path, item_dict["device_id"], self._dev_id)
-                continue
-
-            if self._start_time > int(item_dict["start_time"]):
-                logger.info("Profiling: job path %s, start_time %s, training start_time %d.",
-                            path, item_dict["start_time"], self._start_time)
-                break
+        for item in os.listdir(self._output_path):
+            if item.startswith('JOB'):
+                path = os.path.join(self._output_path, item)
+                job_id = item
+
+                log_file = get_file_names(path, "host_start.log")
+                if not log_file:
+                    logger.error("Profiling: job path %s, host_start.log not exist.", path)
+
+                log_file = os.path.join(path, log_file[0])
+                item_dict = self._parse_host_start_log(log_file)
+
+                if not item_dict:
+                    logger.error("Profiling: job path %s, fail to get job start info.", path)
 
-            job_id = item.strip()
-            break
+                if self._dev_id != item_dict["device_id"]:
+                    logger.info("Profiling: job path %s, dev id %s, training device id %s.",
+                                path, item_dict["device_id"], self._dev_id)
+
+                if self._start_time > int(item_dict["start_time"]):
+                    logger.info("Profiling: job path %s, start_time %s, training start_time %d.",
+                                path, item_dict["start_time"], self._start_time)
+
+                break
 
         if not job_id:
             msg = "Fail to get profiling job, please check whether job dir was generated"