Objective To observe the clinical effect of modified Maxing Kening Decoction on the treatment of laryngeal cough due to wind evil invading lungs. Methods 60 laryngeal cough patients who were clinically diagnosed as wind-evil invading lung type were randomly divided into in the treatment group and in the control group, 30 cases per group. The treatment group was treated with modified Maxing Kening Decoction and the control group was given conventional western medicine. 7 days was a course of treatment. After 2-course treatment, the clinical effects and score changes of main symptoms in the two groups before and after treatment were observed. Results The total effective rate in the treatment group was 93.33%, which was significantly better than that(73.33%) in the control group(P<0.05). After the treatment, the scores of the main symptoms of the two groups such as itching, coughing and dryness of throat were significantly lower than those before the treatment(P<0.05), The reduction of the treatment group was significantly lower than that of the control group (P<0.05). Conclusion Modified Maxing Kening Decoction can significantly improve the clinical symptoms and the clinical effect for laryngeal cough patients with wind-evil invading lung type.