The embodiment of the invention provides a side wall type hovercraft. The side wall type hovercraft has a regular shape in the storage state, internal parts are properly protected, and the portabilityis good; a power recovery system is arranged outside an air cabin, energy can be effectively utilized, and the cruising ability is better; a mounting groove is formed in the front surface of a hull,different working parts can be installed in the mounting groove for different working contents, and the applicability is strong; paddles adopt a sub-paddle split structure, and the maintenance cost islow; sub-paddles are not easily opened when the sub-paddles are stored, the damage of the paddles to the human body can be avoided, and the safety is better.