The invention provides a novel high-altitude fast drop device, which belongs to the technical field of high-altitude fast drop devices and mainly solves the problems that in the prior art, the drop speed cannot be controlled, the braking form is single, the potential safety hazard exists, and during the use by users, weightlessness feeling and speed fluctuation phenomena occur. The novel high-altitude fast drop device comprises a casing (7), a rotating tube (10) and a centrifugal braking device (1)s, and is characterized by also comprises a preset torque braking device and a manual braking device, wherein the preset torque braking device comprises a braking arm (11), a friction plate (12), a regulating screw rod (8) and a pressing spring (9), the friction plate (12) is positioned between the braking arm and the rotating tube, and the manual braking device consists of a handle (4), a brake handle (3) and a brake line (2). The novel high-altitude fast drop device has the advantages that three braking modes are adopted, the safety is higher, the drop speed of the fast drop device can be adjustable, and in addition, a hovering function is realized.