The invention relates to an error correction braking system with an outward rotating solenoid valve having fixed rotation angle and a control method thereof, in particular to the error correction braking system which can change an accidental step on an accelerator into an automatic braking. The error correction braking system comprises a sensor, sensor signal analyzer, a control signal generator and a power supply controller, which are sequentially connected with one another. The power supply controller is connected with the outer sleeved rotator type solenoid valve having fixed rotation angle and a direct current power supply. The error correction braking system with the outward rotating solenoid valve having fixed rotation angle has the advantages that response speed from detecting the accidental step on the accelerator to correcting the accidental step into braking is fast, the solenoid valve which drives a brake is accurate in operation with no rotator locking, and a braking state can be maintained for a long time without power consumption, full-automatic error correction braking and full-automatic resetting can be achieved, and duration time of the braking state is unlimited by manual resetting.