For parasitic infections, the site of parasitic infection, such as the biliary tract and intestinal tract, should be considered. After parasitic infection, the pain is usually sudden, especially after taking acidic food, such as vinegar, the pain will be relieved immediately, which is a typical manifestation of this disease. For patients with parasitic infections in the intestinal tract and biliary tract, some of them will show worm bodies and eggs in the stool. For the treatment of such diseases, patients are advised to take oral deworming drugs such as albendazole, also known as intestinal wormer, which can be taken 1-2 times. After the adult worms and eggs are excreted in the stool, the patient should be re-examined, usually by ultrasound or CT or MRI, which can show the roundworms in the biliary tract and intestines.