Red pear water is actually icing sugar stewed pear, is a kind of food, does not have the role of the treatment of cough, cough need to identify and treat different types of medication for external, internal injuries and other different types of treatment. 1. external cough (1) wind-heat cough: the main manifestations of coughing, sore throat, swelling, cough phlegm sticky or yellowish color, accompanied by fever, headache, fear of wind, nasal congestion and runny nose. The treatment needs to remove wind and clear heat, promote lung cough, can choose the mulberry and chrysanthemum drink plus reduction treatment. (2) Cough with wind-cold: mainly characterized by severe cough, dry and itchy throat, cough with white sputum of thin texture, accompanied by nasal congestion, runny nose, fear of cold, etc. The treatment needs to dispel wind and cold, promote the lungs to stop cough. The treatment needs to dispel wind and cold, promote lung cough, you can choose to take San’ao Tang plus reduction treatment. 2. Cough due to internal injuries (1) Phlegm-heat lung depression: the main manifestations are cough with abundant phlegm, yellow color, sticky texture, sore throat, fever, red face and ears, dry mouth, etc. The treatment needs to clear away heat, dissolve phlegm and relieve cough. Treatment needs to clear away heat and resolve phlegm, purge the lungs to stop coughing, and can be treated by adding subtractions to Qing Jin Hua Phlegm Tang. (2) Phlegm-dampness in the lungs: manifested as cough with much phlegm, white in color, sticky or lumpy in texture. It is accompanied by chest tightness, lack of appetite and unformed stools. It is necessary to dry dampness and resolve phlegm (to remove phlegm by drying dampness drugs), and regulate qi to stop coughing, which can be treated by using Er Chen Ping Stomach Powder together with San Zi Nourishing Relative Soup with additional subtractions. (4) Deficiency of lung yin (insufficient yin in the lungs): manifested as dry cough with low voice, low and thick phlegm, even with blood, dry throat and hoarseness. It is necessary to nourish yin and clear heat (nourish yin fluid and clear away heat), moisten the lungs and stop coughing, which can be treated by adding subtractions to Sha Shen Maidong Tang. If the cough does not stop, consult a doctor in time, follow the doctor’s instructions for medication, do not take medication without authorization.