Abstract:Apprenhension is the most severe coercive measures in criminal prosecuion. Application of arrest should ensure to combat crime accurate effectively, but also to protect human rights. At present, Some effective practices of arrest have been implemented, Conditions of apprenhension have been applied correctly.at the meantime, There is also problems which the public security organs withdraw and change arrest measures. We should take further steps to improve these systems which procuratorial organs should supervise public security organ's revoking, changing arrest , systems of the procuratorial organs determing apprenhension and systems of execution of arrest.