The invention discloses a precision correction method and system for a magnetic levitation train traction system position control ring. The precision correction method comprises the steps that A, a speed measuring system collects position related information of a train; B, the position related information is sent to a traction system through a signal system; and C, the traction system carries outclosed-loop control over the position of the train according to the position related information. The method further comprises the step A1 before the step A. Time is checked for the speed measuring system, the signal system and the traction system, and timestamp information is increased. According to the method and the system, when the time is checked for the speed measuring system, the signal system and the traction system, the timestamp information is increased, the influence of delay and periodical random shaking is avoided, and the requirement for traction control of the medium and high speed magnetic levitation train is met. By the adoption of mature and cheap 4G-LTE wireless communication, the method has the characteristics of high bandwidth, low delay, wide coverage, QOS ensuring and high-speed moving. The method for improving the precision of medium and high speed magnetic levitation pole phase angles is simple and practical, and has a good project application prospect.