Stomach pain without bloating and acid reflux may be caused by gastritis, stomach cramps, gastrointestinal dysfunction, and abdominal cold. You can take bismuth potassium citrate tablets, omeprazole, scopolamine and other medicines under the guidance of physician. 1. Bismuth potassium citrate tablets: it can be used for stomach pain caused by chronic gastritis, heartburn and so on, and at the same time protect the gastric mucosa. It is forbidden for those who are allergic to citrate as well as pregnant women. 2. Omeprazole: it is a kind of drug to inhibit the secretion of pepsin and gastric acid, which is suitable for gastric ulcer, duodenal ulcer, reflux esophagitis and so on. It is forbidden for pregnant women, allergic body, infants and those with renal insufficiency. 3. Scopolamine: used for colic caused by spasm of gastrointestinal tract, bile duct, pancreatic duct and ureter, such as fulminant meningococcal meningococcal meningitis, toxic dysentery, etc. (need to be combined with antimicrobial drugs), gastrointestinal spasm. Pay attention to the usual diet to light, do not eat spicy stimulation, cold food, it is recommended to go to the corresponding department of the hospital for examination, to clarify the cause of the disease after symptomatic treatment.