Stomach bulging hardness is usually caused by indigestion, chronic gastritis or stomach cancer, etc. It can be treated by exercise, taking omeprazole or surgery. 1. Indigestion: it is mostly caused by excessive diet or intake of greasy and cold food that is not easy to digest, because it increases the digestive burden of the stomach and intestines, and the digestion of food is slow, and it accumulates in the stomach for a long period of time, so the phenomenon of stomach bulge and hardness can appear. Patients can be appropriate exercise to promote gastrointestinal peristalsis, if necessary, can take drugs such as domperidone treatment. 2. Chronic gastritis: can cause gastric mucosal congestion and edema, affecting the digestive function of the stomach and intestines, patients often have acid reflux, postprandial satiety, epigastric pain, etc., because of postprandial satiety is more pronounced, but also the symptoms of the stomach hard. Omeprazole capsules or belladonna tablets can be taken for treatment. 3. Stomach cancer: when the patient has tumor in the stomach, it can lead to hardness in the stomach. They should consult the doctor in time and undergo surgery or radiotherapy if necessary. Patients who are allergic to the above drugs and patients with other contraindications stipulated in the instruction of the drugs are forbidden to use the drugs, and the drugs should be taken according to the doctor’s prescription. In addition, there are other reasons that can lead to the stomach bulging hard, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.