Play azithromycin that intravenous infusion azithromycin, stomach pain may be caused by adverse drug reactions, or diseases such as mesenteric lymphadenitis. 1. Adverse drug reactions: the most common adverse reactions to azithromycin are gastrointestinal reactions (abdominal pain, nausea, vomiting, diarrhea, etc.), skin rashes, and elevated aminotransferases. Therefore, abdominal pain during intravenous use of azithromycin may be caused by azithromycin adverse drug reactions. 2. Caused by diseases: such as mesenteric lymphadenitis, which is more common in children, especially after respiratory tract infection can induce mesenteric lymphadenitis and abdominal pain. Or the use of antibiotics leads to gastrointestinal tract dysfunction, can also appear abdominal pain symptoms. If abdominal pain occurs after intravenous infusion of azithromycin, it is necessary to inform the doctor in time, clarify the cause of the disease under the doctor’s guidance, and adjust the medication program if necessary.