Abstract: Ship chamber installation is a difficulty in the equipment installation of the first class launching type ship lift in the Goupitan Hydropower Station.Firstly, this paper introduced the technical scheme of chamber launching by airbag, analyzed the load condition of air bag and the cabin during chamber launching.Accordingly, reinforcement measures such as additional transport carrier and auxiliary air bag, and reclining door were implemented.Secondly, the ship floating technical scheme was elaborated, the quality control and the ship launching process were introduced, and the floating towing and entry positioning technology were implemented.Engineering practice showed that the ship lift chamber launching and floating scheme was safe and reliable, which can provide reference for similar ship lift chamber installation.