Empirical research showed that when medical disputes arise,the emergence of that damage must be due to the fault of either party,while everyone ignored the unforeseen,difficult-to-prevent and ubiquitous occurrence of medical professional risk,and the fact that the professional risk can also occur when no party makes mistake in medical events.It is of particular importance to explore ways to avoid medical professional risks,to allow medical staff in a safer,less risk condition,and meanwhile throw themselves wholeheartedly into the cause of life-saving career.