Abstract: Objective To investigate the characteristics and rules in the treatment of chronic cough after mycoplasma pneumonia in children by Professor Wang Xuefeng. Methods A total of 277 prescriptions by Professor Wang Xuefeng for the treatment of chronic cough after mycoplasma pneumonia in children were collected and sorted out. The data were analyzed by using SPSS 17.0 software through establishing a systematic database.Results A total of 84 kinds of traditional Chinese herbs were used in the prescription, and 69 kinds of traditional Chinese herbs with frequency more than 1% were selected for analysis. Among them, the highest frequency of use was 93.50%, the lowest frequency 0.36%.There were 13 kinds of herbs whose frequency was more than 50%. The cold medicines were the most, followed by the warm and placid medicines, and the cool drugs were the least. The drugs were mainly sweet taste medicine, followed by bitter and spicy taste, while the drugs of light, sour, salty, astringent taste were less. The herbs aiming at lung meridian were the most, followed by those aiming at the stomach meridian and heart meridian, and there were herbs aiming at other meridians, such as spleen meridian, large intestine meridian and liver meridian, the liver meridian, the kidney meridian, the gallbladder meridian, the small intestine meridian, the pericardium meridian, the bladder meridian and the triple Jiao meridian. As far as the classification of drug effect was concerned, the drugs with accumulative frequency above 1 000 were phlegm-resolving, cough-relieving and asthma-relieving drugs, followed by heat-clearing and deficiency-tonifying drugs, and then the digestive drugs, astringent drugs, exterior-syndrome relieving drugs, diuresis and dampness-relieving drugs, Liver-calming and wind-quenching drugs, antipsychotic drugs, blood-activating and stasis-removing drugs, Qi-regulating drugs, dampness-removing drugs, purgative drugs and resuscitation drugs for inducing resuscitation.ConclusionProfessor Wang Xuefeng's diagnosis and treatment of chronic cough after mycoplasma pneumonia in children is mainly to clear and moist the lung and relieve cough, and the drugs used are mostly slightly cold, sweet and bitter and processed products.

Key words: Chronic cough, Mycoplasma pneumonia, Wang Xuefeng, Children