Ceiling closing-up line decoration device

The utility model relates to the technical field of indoor decoration, in particular to a ceiling closing-in line decoration device which comprises a mounting base. The mounting base comprises a horizontal plate, a first vertical plate arranged on the top face of one side of the horizontal plate, a second vertical plate fixedly connected with the side face, close to the first vertical plate, of the horizontal plate, and a lower vertical plate fixedly connected with the bottom face of the side, away from the second vertical plate, of the horizontal plate. A panel mounting part is formed between the first vertical plate and the second vertical plate, the wall body decoration panel can be fixedly connected with the mounting base through the panel mounting part, and a bent part extending in the direction away from the second vertical plate is arranged at the lower end of the lower vertical plate; and a ceiling mounting groove for mounting a ceiling material is formed between the bent part and the horizontal plate