The invention relates to a plate type connecting structure of a tower body and a tower plate in a tower, which comprises an inner wall of the tower body, an inner cylinder body and the tower plate. The inner wall of the tower body is fixedly connected with the top of the inner cylinder body; the tower plate is fixedly connected with the bottom of the inner cylinder body; a connecting piece is arranged between the inner wall of the tower body and the inner cylinder body; and the connecting piece is fixedly connected with the inner wall of the tower body. The connecting structure of the invention can reduce the sectional area of welding seams between the inner cylinder body and the tower plate and between the splicing plates of the tower plate, and can reduce the welding deformation of the tower plate. The tower plate can naturally expand or shrink, thus the flatness of the tower plate can be effectively maintained, and the stability of the tower plate can be improved.