The present invention reveals a massage chair having concealable leg massage unit, including a massage chair and a leg massage unit positioned in a front portion of the massage chair. The two sides of the massage chair are provided with guiding tracks respectively and a moving means which moves along the guiding tracks. The rear portions of the guiding tracks are horizontal, and the front portions arc upward. The moving means is fixed with forward extended push-pull rods with a front end of each push-pull rod pivotally connected to a rear end of a tow board. A front end of the tow board is provided with a rolling wheel, and the leg massage unit is pivotally connected between two tow boards. The present invention not only reduces the volume of a massage chair but also makes itself more convenient and comfortable to users.