Tummy pain after vaccination may be caused by an adverse reaction to the vaccination. However, if the patient has more serious stomach pain, diarrhea, vomiting and other gastrointestinal symptoms, or if the symptoms have not been relieved for a long time, it is considered to be caused by gastrointestinal diseases or other diseases. Some patients may experience adverse reactions such as stomach pain after vaccination. Generally, the symptoms are mild and do not require special treatment, and can be relieved on their own after a period of time. In addition to stomach pain, adverse reactions such as mild diarrhea, nausea, vomiting, fever, skin rash, itching, etc. may occur after vaccination. If the pain symptoms are more serious or cannot be relieved on their own, they need to be considered to be caused by diseases. Some gastrointestinal diseases, such as gastritis, gastric ulcer and enteritis, may cause stomach pain in patients. In addition, diseases of the liver, gallbladder, pancreas, appendix and other organs may also cause stomach pain. Female patients should also consider whether the stomach pain is caused by the imminent menstruation or caused by inflammation of the adnexa, etc. If you have stomach pain after vaccination, you can try to relieve the pain with hot compresses and massage first, but if the pain is not relieved for a long time or the pain is more intense, it is recommended that the patient should go to a regular hospital for consultation to clarify the cause and then carry out the corresponding treatment.