The main symptoms of gallstones include biliary colic, fever, chills and jaundice, etc. The main harms are caused by cholecystitis, gallbladder polyps and gallbladder cancer. 1. Symptoms of gallstones: (1) Biliary colic: mainly pain in the right upper abdomen, radiating to the right shoulder and back, accompanied by nausea and vomiting. (2) Fever and chills: This is due to the obstruction of bile ducts caused by gallstones, which obstructs the discharge of bile and causes bacteria to breed and multiply in the bile ducts, resulting in fever and chills. (3) Jaundice: due to the obstruction of bile discharge, jaundice of skin and sclera occurs. 2. Hazards of gallstones: (1) Cholecystitis: due to the action of gallstones, the bile duct is obstructed, causing bile discharge obstruction and cholecystitis. (2) Gallbladder polyps: gallstones can cause gallbladder polyps, and if the diameter of gallbladder polyps is more than 1 centimeter, it may also cause cancer. (3) Gallbladder cancer: gallbladder wall may cause gallbladder cancer due to repeated stimulation by gallstones for a long time. If you find gallstones, please go to the hospital in time for active diagnosis and treatment so as not to delay the treatment.