A physical exercise device using a T-shaped bar, comprises: a vertical rod constituting the T-shaped bar and having a plurality of first height-adjusting holes; a hollow vertical rod telescopically fitted around the vertical rod and having a plurality of second height-adjusting holes; a horizontal rod horizontally secured to the hollow vertical rod and having a pair of footrests fixed thereto; a pair of vane-shaped cushioning plates attached to the pair of footrests, respectively, and each having a thinner front and a thicker rear; a base having a projection formed at one end thereof; and a seat secured onto the base and having a higher front and a lower rear. According to the present invention, it is possible to effectively conduct a leg exercise for relieving the leg muscles' fatigue by relaxing the sole muscles and the calf muscles, a thigh exercise for relieving the thigh muscles' fatigue by relaxing the thigh muscles, back and neck exercises for relieving the back muscles and neck muscles' fatigue by relaxing the back muscles and the neck muscles, and a groin exercise for relieving the groin muscles' fatigue by relaxing the groin muscles, whereby a massage effect is afforded and an exercise of the whole body is made possible.