Summary of case history,　A 33 year-old male patient, because of the "red papules, plaques, and ulceration of both lower limbs for 1 month" sees a doctor, patients with double leg purple patches in sizes, papules, central has burst, scabby, surface desquamation, activities in obvious pain, in the course of the disease without fever and night sweats, no cough, sore throat, abdominal pain diarrhea, the symptom such as no conjunctival congestion, he sleeps, mainland is normal, red tongue, yellow and greasy moss thin root, Pulse number. Oral ulcer attacks were frequent in the past 2 years, with an average of once a month. Histopathology showed infiltration of neutrophils, nuclear dust, lymphocytes and histiocytes around and in the hair follicle, abscess formation in the hair follicle, infiltration of lymphocytes and histiocytes around the full-thickness vessels and appendages of the dermis, no granuloma, PAS staining and acid-fast staining were negative.,TCM diagnosis,　fox isbemusing(heat-toxic type),Western medicine diagnosis,　behcet's disease,Therapeutic methods,　Colchicine tablets 0.5 g Po bid+ Simiaoyong an decoction (Honeysuckle vine 60 g, Radix ginseng 60 g, angelica 40 g, licorice 20 g, Lulutong 10 g, Leech 5 g, fried Fructus aurantii 15 g, soil Tuckaho 30 g, Huainiu bidentum 30 g, 5 doses, Astragalus 30 g was added at second diagnosis). After treatment, the patient stopped taking traditional Chinese medicine and relapsed with colchicine tablets 0.5 g Po bid and gazalidomide 50 mg Po tid.,Clinical outcomes,　The treatment effect of colchicine tablets 0.5 g Po bid+ simiaoyong 'an decoction for 10 days is similar to that of colchicine tablets 0.5 g Po bid+ gazalidomide 50 mg Po tid for 3 weeks, indicating that simiaoyong 'an decoction has a fast and good effect.