An automobile anti-collision and anti-misoperation throttle system with a relay for controlling positive-negative rotation of a motor relates to a system which directly transforms automobile anti-collision signals and throttle-misoperation signals into brake operating signals. The sensor switch (K0) is connected to and controls the relay reversed power controller (2), the relay reversed power controller (2) controls and supplies electric power to the limit-switch-integrated motor assembly (3), the limit-switch-integrated motor assembly (3) drives the sleeved stretching rope (4), the limit-switch-integrated motor assembly (3) also cuts off a reversed power circuit of the relay reversed power controller (2), and the sleeved stretching rope (4) transmits a motor rotation drift of the limit-switch-integrated motor assembly (3) to the automobile brake pedal (5); the sensor switch K0 is connected to the anti-collision controller (11) in parallel, for respectively controlling the automobile brake pedal (5).