In recent years, because the aging society makes rapid progress, the load on the rehabilitation staff becomes a more burden. The help is needed when the patients shift to train walking from using the wheel chair. The walk training make the patient 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 patient to train is expected to be developed. In this research, we design and develop the walker with the assist equipment translating the suspected walking motion to the rotating wheel motion. Using this walker, the patients 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 or 4-link planar mechanism, which is the oscillating and rotating motion transfer. This mechanism is designed to make its coupler curve simulate the walking motion by means of coupler curve matching.