Summary of case history ,Patient Du, male, 8 years old, was treated in a pediatric department of another hospital due to "intermittent abdominal pain for 20 days", and his abdominal pain did not have much recovery. Then he came to our hospital for treatment with traditional Chinese medicine on January 17, 2021. Diagnostic information: abdominal pain, nausea, no vomiting, poor appetite, sound sleepiness, no feces for 3 days, and less urination. Red tongue, thick yellow tongue coating, rapid pulse. ,TCM diagnosis ,abdominal pain, viscera deficiency cold. ,Western medicine diagnosis ,Pediatric mesenteric lymphadenitis. ,Therapeutic methods ,Oral treatment with Wenzhong Zhitong and Ruanjian Sanjie decoction. ,Clinical outcomes ,The patient recovered.