In China, according to the provisions of the "Road Traffic Safety Law of the People's Republic of China", after a traffic accident, regardless of whether anyone is injured or not, the parties concerned are obliged to stop immediately, protect the scene, and promptly report to the traffic management department of the public security organ. Even if no one is injured, it is necessary to call the police, because traffic accidents may involve property damage, maintenance of traffic order, and identification of responsibilities. After calling the police, the traffic police will go to the scene to investigate, record the accident situation, and determine the responsibility for the accident based on the scene situation and related evidence. This is very important for subsequent insurance claims and accountability. In addition, timely alarm also helps to prevent secondary accidents at the scene of the accident and ensure traffic safety. Therefore, even if no one is injured, the police should be called to deal with it in order to properly solve the problems related to the accident in accordance with the law.