Chronic bronchitis, referred to as chronic or old bronchitis, is a chronic, non-specific inflammation of the trachea, bronchial mucosa and surrounding tissues. Chronic bronchitis is a common and frequent disease that seriously endangers people’s health, especially in the elderly, with a prevalence of about 15% in people over 50 years old. Chronic recurrent cough, sputum and shortness of breath, which occurs at least three times a year and lasts for two years or more, and after other cardiopulmonary diseases can be excluded, can be diagnosed as chronic. It is inevitable that patients with LCC will have to deal with antibiotics, and the proper and rational use of antibiotics is crucial for patients. Antibiotics are also commonly known as antibacterial drugs, and should be used when a patient with chronic branch has an aggravated cough, increased sputum volume, yellowing of sputum to pus, or fever, which is considered to be a combination of bacterial infection causing an acute exacerbation of chronic branch. There are many types of antibiotics, and the commonly used drugs are: erythromycin, roxithromycin, azithromycin, penicillins, cephalosporins, clindamycin, ciprofloxacin, levofloxacin, etc. Mild cases can be administered orally, while more severe cases require intramuscular or intravenous antibiotic injections. Antibiotics are prescription drugs, and each antibiotic has its own scope of application and side effects, so patients should not apply them blindly on their own. The following points are common misconceptions about the use of antibiotics in patients with chronic illness and should be avoided. 1. Antibiotics are used for non-infectious factors. Sometimes the acute attack of Lonicera is caused by non-infectious factors such as smoke, irritating gas, allergy, cold, etc. In such cases, antibiotics are generally not needed. 2, preventive use of antibiotics. Some patients use antibiotics to prevent the onset of chronic illness, the author has met patients with chronic illness who have been applying antibiotics all year round. The experiment shows that the prophylactic use of antibiotics in patients with slow-onset can not reduce the number of attacks, but it is easy to lead to dysbiosis and drug resistance, and wait until the need to use antibiotics again is not effective. The actual antibiotics have some toxicity and side effects, especially damage to the liver, kidneys and other important internal organs, which can be more than worth the loss. 3, the application of antibiotics in remission. If a patient with chronic branch has only a small amount of white sputum and a mild cough that can be maintained for more than 2 months, it means that he or she is in remission of chronic branch, and there is no need to use antibiotics in this period. You can do what you can to exercise, prevent cold and flu, and eat well. You can also use some Chinese and Western drugs that improve the immunity of the body. 4, arbitrary application, arbitrary replacement or arbitrary stop antibiotics. Some patients, regardless of what changes in the condition, randomly use their own antibiotics, invalid when casually replace another drug, once the symptoms are reduced to stop, the dose and the course of treatment is extremely irregular, which produces drug resistance, but also easy to delay the disease, is very harmful. 5, large doses of good efficacy. Some patients in order to quickly take effect, unauthorized to increase the amount of drugs. Not all drugs are proportional to the dose and effect, on the contrary, many drugs increase in toxic side effects after dosing. The dose of antibiotics should not only be increased, but should also be reduced appropriately, as most chronic patients are old and have varying degrees of declining liver and kidney function. In short, the application of antibiotics should be very careful, a little inattention, will enter the wrong area. The most important thing is that you should not use antibiotics blindly because you have been ill for a long time. The only way we can reasonably and effectively apply antibiotics is to understand antibiotics scientifically and grasp the characteristics of chronic illness and antibiotics to serve humanity.