The invention discloses a method for blocking a large-
pipe-
diameter rainwater pipeline through a short air bag. The method includes the following steps that firstly, the pipeline is strengthened, and a foundation pit is excavated; secondly, impurities are removed; thirdly, the short air bag is arranged, and fixing is firm; fourthly, the short air bag is connected with an
air compressor; fifthly, a three-way air valve is checked; sixthly, pressurizing and inflating are conducted; seventhly, sealing is achieved; eighthly, after work is completed, the three-way air valve is adjusted, and exhausting is conducted; ninthly, the short air bag is pulled out. According to the method for blocking the large-
pipe-
diameter rainwater pipeline, the short air bag is used for blocking the drain pipeline, the problems that that great danger exists in the
brick wall detaching work, blocked residues can be hardly removed thoroughly, rubbish mixed in fluid in the pipeline may block the pipeline, and the use safety of the pipeline is affected are solved, the
purchase cost and the use cost are saved, the
time cost of the construction progress is saved, various costs are reduced, the construction cost is reduced, the
economic benefits are improved, underground unmanned work is achieved, the safety of workers is ensured, and the construction period is shortened.