The gastric angle is an anatomical structure of the stomach, located in the lower part of the gastric body. There is a concave trace in the lesser curvature of the stomach near the pylorus, which is the junction of the gastric body and the gastric sinus on the side of the lesser curvature of the stomach, and this concave trace is called the gastric angle. This concave mark is called the gastric angle, which is also known as cardia incision, near the liver, gallbladder and duodenum, and is the most common site of gastric ulcer and gastric cancer, because the gastric angle is the migratory area of the pyloric gland and the gastric body glands, so ulcers located in the gastric angle are not easy to be healed, and are prone to cancerous transformation. The common causes of gastric ulcers are Helicobacter pylori infection, emotional and stress factors such as long-term tension, anxiety, depression, etc., bad habits such as overeating, etc., and medications such as aspirin, Protonix, etc. If there is any discomfort in the stomach, consult a doctor for a clear diagnosis and follow the doctor’s instructions for treatment.