“老慢支”是慢性支气管炎的简称,是冬季中老年人的常见疾病之一。现认为,凡是一年当中有3个月咳嗽,这种情况连续2年以上,而且咳嗽不是由于心肺等其它疾病所致就可诊断为慢性支气管炎。据统计,我国50岁以上中老年人发病率为15%-30%左右。临床上常表现为咳嗽、咳痰或气喘等症状 “Old chronic bronchitis” is short for chronic bronchitis and is one of the common diseases of middle-aged and old people in winter. It is believed that any cough during 3 months of the year, this situation for more than 2 years, and cough is not due to other diseases such as heart and lung can be diagnosed as chronic bronchitis. According to statistics, the incidence of over 50 years old in our country is about 15% -30%. Clinically often manifested as cough, sputum or asthma and other symptoms