The invention provides a manpower vehicle speed limiter which comprises a rotating mechanism, a power source motor, a power motor, a transmission line, a fixing disc, a damping connecting rod and a compression braking mechanism. The power source motor is driven by the rotating mechanism to generate power. An installation hole is formed in the fixing disc. Both the power source motor and the power motor are fixedly arranged on the fixing disc. The compression braking mechanism is arranged in the installation hole and movably connected with the bottom of the installation hole. The middle portion of the damping connecting rod is rotationally connected with the fixing disc. One end of the transmission line is connected with the upper portion of the damping connecting rod, and the other end of the transmission line is connected with the power motor. The damping connecting rod is driven by forward and reverse rotation of the power motor to rotate. The manpower vehicle speed limiter has the beneficial effects that a good speed limiting effect on a manpower vehicle can be achieved, and the safe traveling of the manpower vehicle is guaranteed; and the manpower vehicle speed limiter is simple in structure, small in size, low in cost and capable of being conveniently used and popularized.