The invention relates to the technical field of display, and discloses an attaching device. The attaching device comprises a bottom frame, a first placing table, a second placing table and a driving module, and the first placing table is provided with a first placing cavity where a display module is placed; the second placing table is provided with a second placing cavity where a backlight moduleis placed, the second placing table comprises a lifting table, the surface, facing the first placing table, of the lifting table forms a supporting surface for supporting the backlight module, and thelifting table can move in the direction perpendicular to the supporting surface relative to the first placing table; the driving module is used for driving the lifting table to act. According to theattaching device, through the cooperation of the first placing cavity of the first placing table and the second placing cavity of the second placing table, accurate alignment of the display module andthe backlight module is achieved, and the product yield after attachment is increased; besides, through control over the lifting operation of the lifting table, automatic attachment of the display module and the backlight module is achieved, the attaching efficiency can be improved, and the attaching accuracy can be further improved.