Eosinophils cannot usually be brought down by diet, but diet helps recovery. High eosinophils may be caused by allergic diseases, parasitic infections, blood disorders, etc. For different causes, certain control of the patient’s diet can be carried out. 1. Allergic diseases: for example, urticaria, hay fever, xenoproteins, etc. These patients are advised to avoid xenoproteins, such as milk, eggs, seafood, etc., so as to avoid aggravation of allergic symptoms. In terms of diet, try to choose some light and easily digestible food, such as clear soup and rice porridge, fruits and vegetables. Stay away from allergens and take anti-allergy drugs, such as loratadine and chlorpheniramine. 2. Parasitic infections, such as roundworm and schistosomiasis. This kind of patients are recommended to eat more high protein food (such as eggs, milk, fresh lean meat), fruits and vegetables and other easily digestible food. Anti-parasitic drugs can be used, such as albendazole tablets, praziquantel tablets, tinidazole dispersible tablets and so on. 3. Blood diseases: such as lymphoma, leukemia, etc., this kind of diet is recommended to light, easy to digest, clean and hygienic food, as well as fresh fruits and vegetables, high protein food (milk, eggs, fresh meat). If eosinophils are high, it is recommended to go to the hospital in time to find out the cause of the disease and then treat it, and the drugs should be used according to the doctor’s instructions.