Eating pizza stomach pain may be due to food impurity caused by gastroenteritis, you can eat some acid-suppressing pain, protect the gastric mucosa, regulate the intestinal bacteria of the drug. 1. Acid suppression and pain relief: patients who eat pizza unclean will lead to pathogenic bacteria into the stomach, the pathogenic bacteria will make the gastric mucosa is damaged, causing stomach pain, then you can eat some acid suppression and pain relief drugs such as omeprazole, rabeprazole and so on. 2. Protect the gastric mucosa: the gastric mucosa should be protected as soon as possible after the gastric mucosa is damaged, you can use drugs such as aluminum sulfate, bismuth pectin to cover the gastric mucosa, reduce the stimulation of gastric acid on the mucous membrane and reduce pain. 3. Regulate intestinal bacteria: this time can also use some gastrointestinal tract helpful probiotics, probiotics can replace the pathogenic bacteria in the stomach to colonize, inhibit the propagation of pathogenic bacteria, can be a good treatment for stomach pain. For patients who eat pizza stomach pain can use the above drugs under the guidance of a professional physician, it is best not to use without authorization to avoid adverse consequences.