A lifting assembly fixed to the fixed base and automatically adjusting the angles of the lifting and backrests of the lifting base, and a lifting and lowering assembly that is lifted and lowered together with the lifting base, A leg support frame fixed to the lifting assembly as it is supported on the legs in a state of being held on the legs and having a hinge portion swingable in a horizontal direction; a side plate fixed to the fixed base and disposed on both side surfaces of the seat and the back; And an armrest frame swingably hinged to an upper surface of each of the side plates in a horizontal direction, wherein the armrest frame further comprises a handle capable of being held by hand, and the legrest frame and the armrest frame And a plurality of rollers capable of supporting the leg joints, the thigh muscles, and the calf muscles are coupled to each other through the interlocking frame, do.;
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