Children’s stomach pain after taking worming medicine may be caused by biliary ascariasis, mesenteric lymphadenitis or side effects of medication, which can be treated by massage, medication or surgery. 1. Biliary roundworm disease: children’s stomach pain after taking worming medicine may be caused by roundworms drilling into the biliary system after being stimulated, if this is the case, usually need to perform surgery to remove the worms. 2. Mesenteric lymphadenitis: children’s stomach pain after taking worming medicine may be caused by necrosis and bacterial infection after roundworms are killed in the mesentery of the intestinal tract, resulting in mesenteric lymphadenitis. If this is the case, you can use amoxicillin clavulanate potassium and other anti-infective treatment, if necessary, through surgery to remove the worms. 3. Drug side effects: children after eating worming medicine stomach pain may also be caused by drug side effects, patients can drink a moderate amount of water to accelerate the metabolism of drugs in the body. If the pain in the stomach is intolerable, it is recommended to consult a doctor in time. Children’s abdominal pain is generally not recommended to take painkillers without authorization, may affect the doctor’s judgment. You should bring your baby to the doctor in time to complete the relevant examinations and standardize the treatment. Drugs should be used under the guidance of a doctor, do not blindly use drugs.