A therapeutic device for slowly stretching a three-dimensional hip joint for reposition movement, where a chest-abdomen fastener fixing band (2) is fixed to a back cover (1); a shoulder fastener suspension band (3) is fixed to the back cover (1) and the chest-abdomen fastener fixing band (2); a pair of wing-shaped supporting bars (5) is fixed to the back cover (1); a pair of limb fixing bars (6) is connected to telescopic ends of a pair of hip joint forward-backward movement adjusters (9), and the pair of hip joint forward-backward movement adjusters (9) are fixed to the back cover (1); upward-downward lifting chute screws (4) are connected to hooks of the pair of wing-shaped supporting bars (5) and the limb fixing bars (6); and an inward-outward telescopic screw (8) is connected between the pair of limb fixing bars (6) which are provided with limb fastener fixing bands (7).