The invention provides a turnover device for an air conditioner indoor unit. The turnover device for the air conditioner indoor unit is used for conveying a part from a first assembly line to a second assembly line which is parallel with the first flow line, and comprises a pickup device and a turnover mechanism, wherein the pickup device is movably arranged between the first assembly line and the second assembly line, the turnover mechanism is arranged above the second assembly line in a pivoting way, and the pickup device is provided with a first working position and a second working position; in the first working position, the part is picked up from the first assembly line; in the second working position, the part is put on the turnover mechanism; the turnover mechanism is used for driving the part to turn over. By adopting the technical scheme, the turnover device solves the problems of difficult operation and low working efficiency caused by manual turnover of the part by operators in the prior art.