Patients with gallbladder stones should know their general condition to determine if they can tolerate the surgery. If the patient is usually in good health, the examination items before surgery are relatively simple: mainly blood, urine, ultrasound, electrocardiogram, chest X-ray. Blood tests include: routine blood, liver function, kidney function, electrolytes, and blood sugar. Syphilis screening, AIDS (Anti-HIV), Hepatitis B and C antibody tests. Blood clotting function. Urine tests are mainly: urine routine. In addition, routine preoperative examinations include: ultrasound, chest X-ray, and electrocardiogram. If the patient is older than 60 years old, it is also necessary to check: echocardiography, pulmonary function and blood gas analysis (in elderly people or those with previous history of related diseases). Magnetic resonance cholangiopancreatography (MRCP) is required if choledocholithiasis is suspected or if dilated common bile ducts are found on ultrasound, etc. If the combination of hypertension, diabetes mellitus, heart disease and other medical diseases promptly consult the relevant departments.