The doctors negligent action is objective fault in nature.It results from the offence of the attentive duties of doctors.The negligent action should be judged by risk?special theorem and trust rule.

• 医师的过失行为本质是一种客观过失,是对医师注意义务的违反,考察医疗过失行为应合理的运用风险判断、专业判断、信赖原则来综合判断。