The injection site for the desensitizing injection can be at the outer upper gluteus maximus muscle or at the deltoid muscle of the upper arm. Desensitizing injections are used subcutaneously, and are injected at an angle of about 30 to 40 degrees, optionally into the edge of the deltoid muscle of the upper arm. The desensitizing injection can achieve the effect of desensitization after being absorbed by the skin. Do not treat blindly, it is recommended to go to the hospital for regular treatment to identify the allergens. After the injection of desensitization injection, redness, swelling, pain and other symptoms may appear at the injection site. After the desensitization injection, you need to pay attention to a light diet, eat more fresh vegetables and fruits such as dragon fruit, do not eat seafood and other foods, away from allergens. Avoid intake of stimulating foods and drinks, such as strong tea, coffee, alcohol and so on. After the injection of discomfort, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to standardize the treatment, so as not to delay the condition.