Objective： To observe the clinical effect of Qingshu Decoction in the treatment of summer dermatitis with type of heat and dampness resistance.,Methods,2,A total of 108 patients of summer dermatitis with type of heat and dampness resistance were included and randomly divided into the treatment group and control group， 54 cases in each group. The patients in the treatment group were treated with Qingshu Decoction orally combined with calamine lotion externally， and the patients in the control group were treated with cetirizine hydrochloride tablets orally combined with calamine lotion externally. The treatment course was 14 days. Before treatment and after 1 week and 2 weeks of treatment， the scores of traditional Chinese medical syndrome， eczema area and severity index （EASI） and pruritus were evaluated. After 2 weeks of treatment， the clinical efficacy and the traditional Chinese medical syndrome efficacy of the two groups were evaluated and compared.,Results,2,After 2 weeks of treatment， the total clinical effective rate was 100.00% in the treatment group and 77.78% in the control group， and the therapeutic effect of the treatment group was significantly better than that of the control group （,P,<,0.01）； the total effective rate of traditional Chinese medical syndrome was 88.89% in the treatment group and 79.63% in the control group， and the curative effect on traditional Chinese medical syndrome in the treatment group was significantly better than that in the control group （,P,<,0.01）. After 1 week of treatment， the traditional Chinese medical syndrome score and EASI score of the two groups were significantly decreased compared with those before treatment （,P,<,0.05， ,P,<,0.01）， and the EASI score of the treatment group was significantly lower than that of the control group （,P,<,0.01）； after 2 weeks of treatment， the scores of traditional Chinese medical syndrome， EASI and pruritus symptom in the two groups were significantly decreased compared with those before treatment （,P,<,0.01）， and the above scores of the treatment group were significantly lower than those of the control group （,P,<,0.01）.,Conclusion,2,Qingshu Decoction combined with calamine lotion can significantly relieve the skin lesions， pruritus symptom and traditional Chinese medical syndrome in patients of summer dermatitis with type of heat and dampness resistance， which is an effective treatment regimen for summer dermatitis.