Summary of case history,　The patient was an elderly male who underwent gastrectomy+partial hepatectomy+cholecystectomy (details unknown) in January 2016 due to an abdominal tumor in an external hospital. The pathological diagnosis was gastric stromal tumor after surgery. On May 9, 2018, he underwent "gastrectomy+hepatectomy+abdominal adhesion release" in ,Beijing Hospital of Traditional Chinese Medicine, due to tumor recurrence. Postoperative pathology: gastrointestinal stromal tumor. In March 2019, the patient began to take imatinib mesylate orally, The reexamination of abdominal enhanced CT showed that the abdominal space occupation was smaller than before, which was considered effective, but the patient had concave edema of both lower limbs, red rash on chest, abdomen and limbs and trunk, pruritus with scaling, and the symptoms gradually worsened. The dermatology department of the external hospital diagnosed "psoriasis vulgaris", and visited ,Beijing Hospital of Traditional Chinese Medicine, of outpatient department for the treatment of integrated traditional Chinese and western medicine, professor YANG zhong use comprehensive analysis of data gained by four diagnostic methods, thought is the spleen in patients with kidney Yang deficiency and dampness, heat, blood stasis and toxin as standard, with spleen and kidney, clear heat lishi, invigorate the circulation of detoxification treatment. During the oral administration of traditional Chinese medicine, the patient did not stop taking imatinib mesylate, and the patient's tumor condition was stable and psoriasis was cured.,TCM diagnosis,　Zheng Jia, Bai Bi,Western medicine diagnosis,　Postoperative gastrointestinal stromal tumor stage Ⅳ, local recurrence, hepatic capsule invasion.,Therapeutic methods,　Oral Chinese medicine decoction,Clinical outcomes,　rash subsided obviously, the curative effect was significant, and the condition was stable during follow-up.