Door and window cover plate and sliding groove device

The utility model relates to the technical field of door and window materials, and discloses a door and window cover plate and sliding groove device which comprises a door and window fixing device. The door and window fixing device comprises a sliding groove and a buckle plate, the buckle plate is arranged on one side of the sliding groove, a clamping block is arranged on the inner wall of the buckle plate, and a clamping groove matched with the clamping block is formed in the top of the sliding groove. According to the door and window cover plate and sliding groove device, through the mode that the buckle plates and the sliding grooves are combined, under the condition that the colors of the sliding grooves are not changed, the colors of the sliding grooves can be changed by buckling the buckle plates with different colors, namely, the cost is reduced by producing buckle plate materials with different colors, and the production cost of the sliding grooves is reduced by using low-cost colors (such as common b