The invention provides an exposure prevention magic cube, and belongs to the field of female protection tools. The exposure prevention magic cube solves the problem that exposure is extremely prone to happening when females wear skirts and ride bicycles. The exposure prevention magic cube comrpsies two clamps, wherein each clamp is formed by hinging two clamping pieces, a roller is arranged inside each clamping piece, a coil spring is arranged on each roller and is arranged at the position, close to the rear end, of the corresponding roller in a sleeving mode, one end of the inner side of each coil spring is fixedly connected with the corresponding roller, and one end of the outer side of each coil spring is fixedly connected with the corresponding clamping piece. The positions, close to the front ends, of the rollers in the two clamping pieces, located on the upper sides, in the two clamps are connected through a rubber belt. The portions, close to the front ends, of the rollers in the two clamping pieces, located on the lower sides, in the two clamps are connected through a rubber belt. Openings are formed in the positions, corresponding to the rubber belts, of the clamping pieces respectively. When the two clamps are attached to each other, the two ends of each rubber belt are wound around the corresponding rollers to the maximum extent, and the initial tension of each coil spring is larger than zero. A plurality of magnetic pieces are arranged on each rubber belt. The exposure prevention magic cube is used for preventing exposure when the females wear skirts and ride bicycles.