Allergy after eating snapper is considered to be related to the patient’s constitution, which may be allergic, resulting in erythema or wind mass on the body surface, which may be accompanied by itching. Due to the different degree of allergy and different symptoms, the treatment methods are different. 1, if the itching is more serious, patients can use loratadine tablets orally under the guidance of a professional physician to relieve the itching symptoms; 2, if vomiting and diarrhea, respiratory difficulties, do not take drugs without authorization, you need to go to the hospital in a timely manner, under the guidance of a professional physician to apply local furnace glycolic lotion or glucocorticoid cream. At the same time, cetirizine can be taken orally. Patients whose symptoms are not relieved after applying and taking oral medications can be given intravenous dexamethasone, vitamin C and other medications. If allergy occurs after consuming turtle, patients should not bathe with hot water as well as apply hot compresses to avoid aggravating the allergic reaction. Avoid eating, especially fried and spicy foods, and eat more vitamin-rich vegetables and fruits. After treatment of allergy, patients should avoid eating snapper in the future.