If it can be notified, it shall be notified and signed, but if it fails to notify or refuses to sign without justifiable reasons, it may be dissected. You can have a look at Article 199 of the Procedures for Handling Criminal Cases by Public Security Organs. In order to determine the cause of death, with the approval of the person in charge of the public security organ at or above the county level, the corpse may be dissected or opened for inspection, and the family members of the deceased shall be notified to be present, and the autopsy notice shall be signed or sealed. If the family of the deceased refuses to be present or refuses to sign or seal without justifiable reasons, it will not affect the autopsy or coffin opening inspection, but it shall be indicated in the notice of autopsy. For unidentified bodies, if it is impossible to inform the families of the deceased, it shall be noted in the record. Article 200 If the cause of death has been ascertained and the corpse cannot be preserved, the family members shall be notified to take it back for disposal. If the family refuses to take it back after notification, it can be disposed of in time with the approval of the person in charge of the public security organ at or above the county level. ”。