Environment-friendly assembled decoration wallboard

The utility model discloses an environment-friendly assembled decoration wallboard which comprises a wallboard body, four first sliding grooves are formed in the outer side of the wallboard body, a main mounting plate is arranged on the outer side of the wallboard body, a second mounting groove is formed in the main mounting plate, four first sliding blocks are fixedly mounted on the inner wall of the second mounting groove, and the first sliding blocks are fixedly mounted on the inner wall of the second mounting groove. Second sliding grooves are formed in the left side and the right side of the main mounting plate correspondingly. According to the environment-friendly assembling type decoration wallboard, a second sliding block and a third sliding block are inserted into a second sliding groove, assembling of the main mounting plate, the right mounting plate and the left mounting plate can be completed, a fourth sliding block is inserted into a third sliding groove, a first locking bolt and a second locking