The utility model relates to a rope descent controlling device, in particular to a rope descent controller. The controller comprises a base plate, a cover plate, a piston type hydraulic damper, a crank linking mechanism, an upper rope pressing wheel, a rope winding wheel and a lifting ring; the base plate and the cover plate are fixedly installed together, an installation cavity is formed between the inner wall of the base plate and the inner wall of the cover plate, the piston type hydraulic damper, the crank link mechanism, the upper rope pressing wheel and the rope winding wheel are arranged in the installation cavity, a damper axle is arranged at the upper middle part of the inner side of the base plate, an upper rope pressing axle is arranged on the base plate at the right side of the damper axle, an axle hole of the rope winding wheel is arranged on the base plate at the lower part of the damper axle, and a lifting ring axle is arranged on the inner wall of the base plate at the lower part of the rope winding wheel axle hole. The rope descent controller has the advantages that the structure is reasonable and compact, the operation is convenient, because of having the rope guide and the bondage functions, the rope descent controller can prevent the rope from sliding out of the wheel and resulting in the device falling off, thus, the security of the rope descent controller is greatly enhanced; because the pressing force of the rope pressing mechanism can be adjusted, the rope descent controller is suitable for different ropes, and thereby, the application scope of the rope descent controller is greatly widened.