The invention discloses a buffering and energy dissipation device for slope protection and belongs to the field of slope protection. The device is mainly composed of a chuck, a casing pipe used for accommodating the chuck, and a clamp, wherein the two ends of a through hole in the casing pipe is in different sizes, the larger end serves as a casing pipe head, the smaller end serves as a casing pipe body, and in this way, the chuck can only be placed in through the casing pipe head; the chuck is a conical cylinder, and the size of an internal channel of the chuck is identical with that of a rope; the clamp is composed of an upper clamp body and a lower clamp body, the structure and size of the upper clamp body are totally identical with those of the lower clamp body, the upper clamp body is mainly composed of a strip-shaped plate and a clamping part, a fixing hole is formed in one end of the strip-shaped plate, the other end of the strip-shaped plate is fixedly connected with the clamping part which can be arranged on the casing pipe head in a sleeving mode, a groove is formed in the clamping part, and the size of the groove is matched with the external profile of the casing pipe head. By the adoption of the device, damage caused by high local stress of a slope protection system and overloading of other components in the system can be avoided.