Desensitization is currently the only effective means of treating allergic diseases. Once the allergen has been identified, and it is neither possible to avoid exposure nor can formal treatment methods achieve the desired results, standardized allergenic desensitization therapy is necessary. Desensitization is the formulation of an allergen into an agent that the patient can use to gradually adapt to the allergen until antibodies are developed. When the patient is exposed to the substance again, no allergic reaction is induced in the organism, and then the symptoms caused by the allergy disappear or are significantly reduced. Two methods are often used: injectable desensitization therapy and sublingual desensitization therapy. Desensitization generally takes 3-6 months to take effect, and to maintain long-term efficacy, the medication should be continued for a period of time after the symptoms have disappeared, generally 2 years is recommended, and the effect can last for many years, even for life.