A gastroscopy can usually be considered 3 months after having a choledochotomy. Gastroscopy involves injecting gas into the patient’s upper gastrointestinal tract to dilate the stomach, duodenum, and other organs to facilitate the examination. Following choledochotomy, the closed end of the severed choledochal duct is connected to the upper GI tract. During gastroscopy in the short term after surgery, gas can easily enter the biliary system, which can easily lead to rupture at the severed end of the choledochal duct. If the recovery is smooth, gastroscopy can be considered only when the scar in the surgical area is mature and the scar strength is maximized at 3 months after the surgery. Patients are advised to go to the hospital for regular follow-ups after surgery and choose the timing for gastroscopy according to the doctor’s instructions.