Elevated concentration of antibiotics in lung tissues means higher concentration of antibiotics in lung tissues, which is beneficial for the treatment of lung infections. Antibiotics into the human body after the first distribution in the blood is called blood concentration, and then transported to the systemic tissues and organs with the help of carriers, the drug concentration in the local tissues and organs is the tissue concentration, some drugs because of the different physicochemical characteristics and pharmacokinetics, in each tissue and organ concentration is different, for example, moxifloxacin, linezolid, and other drugs such as lung tissue concentration of the drug is higher. Some of the role of the respiratory system of drugs and antibiotics taken at the same time will increase the antibiotic blood concentration in the lung tissue, so that the antibiotic’s anti-infective effect to play a multiplier effect, for the treatment of pulmonary infectious diseases has a very important role. For example, respiratory medicine in the treatment of lung infections commonly used aminobromosol hydrochloride and amoxicillin, cefuroxime and other antibiotics, as long as the patient is not allergic to the antibiotic, then aminobromosol hydrochloride in the expectorant at the same time to a certain extent to increase the permeability of the lung tissue, so that antibiotics are more likely to enter the lung tissues to play an anti-infective effect. The use of drugs need to be taken under the guidance of a doctor, do not use drugs without authorization to avoid serious adverse reactions.