Before checking for gallstones, one should not eat, as the main methods of examination are through color ultrasound and CT scans, which can better lead to a diagnosis. Both color ultrasound and CT scans require fasting because eating can cause the stomach to fill, potentially resulting in artifacts that hinder the observation of the condition. Therefore, patients with gallstones need to fast before the examination. The approach to treatment depends on the presence of symptoms and the size of the stones. For large gallstones that cause recurrent episodes, early surgical treatment should be considered. Only by surgically removing the gallbladder can a definitive cure be achieved, which can significantly improve the prognosis for the patient.