The main symptoms of worm disease are local pressure and irritation, toxicity and allergic reaction and secondary infection. 1. Local compression and irritation symptoms: when the larvae are active in the liver, there can be pain in the liver area; when the larvae are active in the lungs, there can be shortness of breath, chest pain and other respiratory irritation symptoms. When the encapsulated worms are in the cranium, they can cause headache, vomiting and even epilepsy. 2. Toxicity and allergic reactions: larvae can gradually develop into echinococcus larvae inducing single or multiple cystic lesions, and when the cyst fluid is overflowed, urticaria, asthma and angioneurotic edema can occur. When a large amount of overflow can produce severe anaphylaxis, or even death. 3. Secondary infection and other complications: once the echinococcal cyst ruptures, it can cause secondary infection. For example, the rupture of hepatic echinococcal larvae can enter the biliary tract, causing acute inflammation, biliary colic, chills, high fever, jaundice and so on. Rupture into the abdominal cavity can cause acute diffuse peritonitis. Symptoms of encapsulated disease are relatively serious, and after diagnosis, it is necessary to take timely surgical treatment, and take medication for symptomatic treatment.