X-ray examination is commonly used to check orthopedics, respiratory, gastroenterology and other diseases. 1. Orthopedics: Orthopedics is usually one of the most commonly used examination items of x-ray. Patients can undergo this examination when they suffer from physical injuries, especially trauma, fracture, joint deformity or limb swelling, pain and deformity in the limb area. If the patient has a bone tumor, the examination may also reveal signs of the lesion. 2. Respiratory: Chest X-ray can usually determine the health of the lung tissue and whether there are localized nodules or shadows, such as lung infections, lung tumors, lung bronchodilatation, etc. It can also confirm the diagnosis of pleural effusion and pneumothorax. 3. Gastroenterology: General barium meal examination can detect lesions in the esophagus, stomach, intestines and abdomen. For patients with intestinal obstruction, standing X-ray of the abdomen can also reveal signs of intestinal dilatation. In gastrointestinal perforation, subdiaphragmatic free gas may be seen on standing abdominal plain films. This is usually combined with a barium meal, colonography, and other tests. X-rays can also detect a variety of diseases. Patients who experience any kind of trauma or discomfort are advised to seek prompt medical attention and follow the doctor’s instructions for appropriate investigations and treatment.