Many patients will be asked to undress during surgery. If monitoring is installed, the patient's privacy may be violated. In particular, once the video accidentally flows out, it will have a great impact on the reputation of patients and have a negative impact on hospitals. Moreover, when a doctor performs an operation, there is always a shadowless lamp above the patient, plus the doctor's assistant, nurse and others. There is basically not much room for monitoring the shooting angle, and monitoring is even more meaningless.