Fly maggot disease is a parasitic disease caused by fly larvae (maggots) parasitizing human or animal bodies. Fly maggot disease according to the parasitized parts of different clinical manifestations are different, mainly gastric fly maggot disease, skin fly maggot disease, nasal fly maggot disease and so on. 1. Gastric fly maggot disease is mainly characterized by chronic gastroenteritis, indigestion, and body weakness, and occurs in summer. 2. Cutaneous fly maggot disease is mainly characterized by tingling under the skin, foreign body sensation, and occasionally accompanied by itching and other clinical symptoms. 3. Nasal fly maggot disease is mainly characterized by sneezing and a foreign body sensation in the nose. The treatment of fly maggot disease, patients can take chloroquine or ethamizine and other drugs. The main thing is still prevention, first of all, pay attention to personal hygiene, take a bath often, do not eat unclean food. The above drugs should be taken under the guidance of a doctor. It is recommended that the patient go to the relevant department of the hospital, clear diagnosis and early treatment to avoid aggravation of the condition.