Sudden pain around the belly button without nausea and vomiting phenomenon, should be based on different causes of choice of non-steroidal anti-inflammatory drugs, antispasmodic analgesics, antibiotics and other drugs. 1. For pain caused by acute gastroenteritis, you can take non-steroidal anti-inflammatory drugs such as acetaminophen, antispasmodic analgesics such as scopolamine, antibiotics such as amoxicillin and other treatment. 2. For appendicitis caused by pain around the navel, if it is simple appendicitis or acute appendicitis in the early stage, you can take antispasmodic painkillers such as scopolamine, antibiotics such as cefdinir capsules, erythromycin dispersible tablets and so on. If the condition requires surgical treatment, the postoperative period should also be accompanied by the use of broad-spectrum antibiotics such as cefdinir capsules. 3. For colitis caused by abdominal pain, can be accompanied by abdominal distension, diarrhea and stool with blood, etc., can be applied to atropine, scopolamine and other antispasmodic drugs. In addition, patients can also be based on their own colitis using mesalazine, azathioprine, methylprednisolone and other drugs. Allergic to the above drugs and the presence of other contraindications specified in the instructions of the drug is prohibited, and the drug should be taken in accordance with medical advice. There are many other causes of sudden pain around the navel, if the symptoms are serious or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, after a clear cause of the disease, under the guidance of the doctor for targeted treatment.