The invention belongs to the technical field of sepak takraw training, and particularly relates to a sepak takraw assistant training device and method. A sepak takraw frame is arranged on one side ofa platform, the top of the sepak takraw frame is connected with a sepak takraw through a detection mechanism, a shaking mechanism is arranged at the lower end of the platform, a slide sliding mechanism is arranged on the upper surface of the platform, through the structure, it is realized that after an athlete jumps from the platform, the shaking mechanism is controlled to enable the platform to tilt and rotate at a certain angle, feet of the athlete are in contact with the surface of the tilted platform when the athlete falls back to the platform, and meanwhile, the tilted feet enable ankle muscle groups to be trained; the movement range borne by the ankle muscle groups can be extended by changing the tilt angle of the platform; and the ankle muscle groups of the athlete can be adapted tothe different movement range directions by changing the tilt direction of the platform, after increasing the training of the ankle muscle groups of the athlete, the athlete can be adapted to the fierce competitions, and the probability of injury of the athlete in the competitions is reduced.