Post-mortem injury: Post-mortem injury refers to the injury to the human body after death, because life activities have been terminated, and there is no life reaction at the injured part or far away from organs. After death, the body was bitten by insects, animals, fish, crabs, etc. Because the house collapsed and killed the body, it may also cause various postmortem injuries on the body. Post-mortem injuries generally have no life response, so we can distinguish between pre-mortem injuries and post-mortem injuries.

Injury after death may be the continuation of criminal behavior;

1. In order to vent their hatred, the perpetrator continued to use violence to cause various injuries, such as cutting off the ears, tongue, breasts and external genitals of the corpse;

2. After the murderer caused death, he dismembered the body for the convenience of carrying or hiding.

3. After the murderer used some kind of violence to cause death, he pretended to be an accident or suicide caused by another kind of violence in order to escape the guilt. Postmortem injuries may also be caused by accidental factors: for example, the chest and ribs may be bruised and bruised, or even the ribs are broken or the liver and spleen are broken; In the process of handling, the car body will cause the surface of the car body to wear.