Abstract: The connotation of hitandrun crime should be grasped from the perspective of legal obligation. After the hitandrun crime, the hitandrun personnel have two obligations that must be fulfilled: the legal obligation of rescuing the victim and protecting the scene and protecting public security. When cognizance escape behavior is recognized in judicatory practice, its specific occurrence opportunity should be grasped. The escaping behavior has the form of attempted escape and suspension, and the escaping behavior and the surrendered behavior should be evaluated separately. As for the circumstances of conviction and sentencing of escaping and the relationship with other circumstances of conviction, it is necessary to judge that the escaping act is the circumstances of conviction or sentencing of the crime of causing traffic accidents in combination with the specific causes of causing traffic accidents.

Key words: traffic accident crime, the person who caused the accident, escape behavior, legal obligation, judicial cognizance

摘要： 关于交通肇事罪逃逸行为的内涵把握，应从法律义务视角进行审视，肇事人员交通肇事后有救助被害人与保护现场、保护公共安全两项必须履行的法律义务。在司法实践中认定逃逸行为时，要把握其发生的特定时机。逃逸行为具有未遂和中止形态，对于逃逸行为与自首行为应当分别评价。对于逃逸的定罪量刑情节以及与其他定罪情节的关系，应结合导致交通肇事的具体原因来判别逃逸行为是交通肇事罪的定罪情节或量刑情节。

关键词: 交通肇事罪, 肇事人员, 逃逸行为, 法律义务, 司法认定