The present disclosure relates to a launch tube including a barrel part 120 having a predetermined length through which a bullet 240 passes when fired; and an ammunition loading part 140 formed to be coupled to one end of the barrel part 120 and having an ammunition chamber 142 having an internal structure matching the shape of a cartridge case 220. In the launch tube, the ammunition 200 is loaded into the ammunition chamber 142, the cartridge case 220 engages the ammunition chamber 142, the ammunition-loaded launch tube is mounted on a separately provided launcher, the bullet 240 is fired, and then the launch tube is replaced with a new launch tube.