The invention discloses a misplacement correction device for a connection plate of a hanging rod. The misplacement correction device comprises a force-bearing plate (1) and an ejection mechanism (2), wherein the force-bearing plate (1) is of a cuboid structure; a reinforcing plate (3) is arranged on the upper end surface of the force-bearing plate (1); L-shaped rods are symmetrically arranged at the right end of the force-bearing plate (1); the two L-shaped rods are in an inwards-buckled shape, and each L-shaped rod comprises a transversal rod (4) and a vertical rod (5); a support plate (6) is arranged between the L-shaped rods; an arc-shaped groove (7) is formed in the upper end surface of the support plate (6); the sidewall of the ejection mechanism (2) contacts with the arc-shaped groove; the centre lines of the two vertical rods (5) are located on the same horizontal plane and parallel to the force-bearing plate (1); and a gap is formed between the opposite end surfaces of the two vertical rods (5). The misplacement correction device disclosed by the invention realizes simple, rapid and labour-saving adjustment for the hanging rod misplaced with the connection plate to a normal position through arranging the force-bearing plate, the ejection mechanism and the L-shaped rods for mutual matching.