The wristband chip can first determine the patient's injury. In the case of a large number of injured people at the disaster site, the wristband scans, the doctor can determine which patients need the first time to perform the operation, and which patients can be transferred to the posterior for treatment. The information that is sent to the mobile hospital in advance through the scanning chip can help the doctor to determine the surgical plan in advance. After arriving at the mobile hospital, the operation is performed at the first time. It is necessary to know that every life saved in the disaster rescue can save many lives. After preliminary calculations, this "wristband surgery" system can increase the efficiency of traditional disaster surgery by more than three times.