The invention discloses a novel aerodynamic force based escape device of a man-carrying rocket and a working method thereof. The escape device comprises a fairing, a rocket body positioning module, a rocket body, a rocket body fixing module, a primary fuel storage box, a rocket framework and a rocket body rotating module, wherein the rocket framework is connected with the rocket body through the rocket body rotating module, the rocket body rotating module comprises a rocket framework connecting seat, a rotating pin and a rocket body connecting rotation block, the rocket body connecting rotation block is connected with the rocket body, the rocket framework connecting seat is connected with the rocket framework, the rocket body connecting rotation block is in rotary connection with the rocket framework connecting seat through a rotating pin, aligned cylinder grooves are formed in the outer wall of the primary fuel storage box and the inner wall of the rocket body rotating module, the rocket body fixing module further comprises a rocket body fixing hook arranged below a compression spring, a telescopic rocket body fixing column is arranged at the position, opposite to the rocket body fixing hook, on the primary fuel storage box, a positioning pin is arranged at the position, corresponding to a rocket body combining position, at the lower portion of the fairing, and the upper portions of two adjacent rocket bodies form a positioning groove.