社会治安突发事件时;法律规定需要查明身份的其他情形。如果警察违反规定,将根据情节轻重受到处罚。第十届全国人大常委会第三次会议日前通过的居民身份证法规定,只有以下情况才需要出示身份证:居民只有在常住户口登记项目变更;兵役登记;婚姻登记、收养登记;申请办理出境手续;? Social security emergencies; other situations where the law requires identification. If the police violate the rules, they will be punished according to the severity of the case. The National Identity Card Law passed by the Third Session of the Tenth National People’s Congress Standing Committee stipulates that an ID card will only be required for the following cases: Residents only change their registered items in their permanent residence; Registration of military service; Marriage registration and adoption registration; Application for exit formalities;?