The walk training make the rehabilitants feel pain because they have to support their body with hands or legs when they use the gait training device. The walker which can motivate the rehabilitants to train is expected to be developed. In this research, we design and develop the walker with the assist equipment translating the artificial walking motion to the rotating wheel motion. Using this walker, the rehabilitants are supported by the saddle, so their hands and legs are relieved from pain keeping their body balance. The assist equipments are designed by using of 6-link planar mechanism, which is the sliding and rotating motion transfer. By method of measuring the pedal reaction force, the load of user is estimated.