Method for recovering carrier rocket on sea

The invention discloses a method for recovering carrier rockets on the sea, which belongs to the technical field of spacecraft recovery, and comprises the following steps: after entering a separation procedure, a first stage of a rocket is separated from an upper stage of the rocket, and moves downwards under the action of gravity; after the first-stage rocket descends to a preset height, the rocket decelerates and enters a rocket body water entering preparation state, and a tail end floating bag is opened; the first stage of the rocket continuously moves downwards, and the tail end floating bag is used for entering water for buffering and splashes down into water; the first-stage rocket continuously enters the seawater downwards and decelerates under the buoyancy action of the tail-end floating bag, the first-stage rocket topples under the self-weight action, and the front-end floating bag is opened in the toppling process; after dumping is completed, the first-stage rocket is in a lying state and floats on