【Objective】To evaluate the efficacy and safety of a new method to locate the responsible bronchus in 23 pneumothorax cases by colored saline. 【Methods】Of 23 cases, methylene blue saline was injected into the target bronchus to localize the position of the air leakage which guiding the occlusion with fibrin glue, or OB glue.【Results】All of 23 cases, bronchus responsible for air leakage had been successfully localized, the average time of locating(from the methylene blue saline injection to the leakage positi...