TAT desensitization injection method: Since the wound has to be injected with TAT, but the skin test is positive, desensitization therapy can be taken to inject TAT. first, the patient has to sign a consent form for desensitization therapy, then dilute the TAT solution to 10 ml with 10 ml of saline, inject 1 ml intramuscularly for the first time, 2 ml for the second time at an interval of 30 minutes, 3 ml for the third time at an interval of 30 minutes, and 4 ml for the fourth time at an interval of 30 minutes. After the desensitization injection is completed, the patient can be observed for 30 minutes, and the patient can leave after no discomfort.