In order to avoid the imminent danger of others' lives, the whole hospital and the public are taught the concepts and skills of first aid, combining CPR + AED to improve the success rate of first aid. At present, the teaching of CPR + AED is based on dummy. Ways to feel the presence of CPR+AED first aid process under high pressure. If you simply use virtual reality (VR) as the virtual first aid environment, it requires higher cost. The feature of the present invention is the use of mixed reality, which is composed of multiple students During the exercise, multiple students, including a commander and other operators, must use "voice" or "gesture control" to issue command commands. The training system will evaluate the performance of the commander and the operator at the same time. "Voice" or "gesture control" exercise CPR + AED, the patient's condition is displayed in the glasses, "real environment" plus "virtual patient, virtual AED, heart rhythm professional instrument, instruction window, etc." Gestures to determine whether the student's disposal is correct. If it is correct, it will prompt or accumulate the score, if there is an error, it will remind or deduct the score. The camera can also judge the depth according to the proportion of the screen occupied by the palm. This software brings students into a real experience, reduces the dizziness of the students during operation, reduces the computing burden of the computer system, does not require "handheld controller", saves the construction cost, "constructs MR CPR + AED teaching system", Simulate the actual operating environment and save more lives instantly.