The invention discloses an aluminum profile clamping strip mounting structure which comprises an aluminum profile clamping strip (1), an inner aluminum single board (2) and an outer aluminum single board (4). The section of the aluminum profile clamping strip (1) is in an inverted T shape. A splicing seam is reversed between the inner aluminum single board (2) and the outer aluminum signal board (4). The ridge of the aluminum profile clamping strip (1) is located in the splicing seam and fixed to the outer side of the inner aluminum single board (2) through a self drilling screw (3). The head of the aluminum clamping strip (1) is located below the splicing seam and covers the splicing seam. The bottom face of the inner aluminum signal board (2) is located above the aluminum profile clamping strip (1), and a seam is reversed between the bottom face of the inner aluminum single board (2) and the aluminum profile clamping strip (1). The outer aluminum single board (4) is suspended above the aluminum profile clamping strip (1) and is kept separated from the aluminum profile clamping strip (1). The aluminum profile clamping strip mounting structure is simple in construction and easy to implement and capable of decorating the splicing seam in the aluminum single board and avoiding cambering and wear, caused by thermal expansion, between the aluminum single boards, no professional staff is needed to conduct operation, and the standardized work is facilitated.