Desensitization treatment requires approximately 8 to 26 injections a year. The desensitizing injections used for desensitization treatment vary by manufacturer and injection method, which in turn leads to a different number of injections in a year. The total course of desensitization injections for desensitization treatment is at least 3 years. If the patient is injected with imported injections, the injections are usually given once a week for the first 4 months, and once every 6 weeks after 4 months. The number of injections is 22 in the first year and 8-9 after the second year. If the patient is injected with domestic injections, the number of injections is a little more, twice a week, i.e. 26 injections per year. Desensitization injections need to be carried out under the guidance of medical professionals to avoid adverse reactions.