Spliced chair based on mortise and tenon joint structure

The utility model discloses an assembled chair based on a tenon-and-mortise structure. The assembled chair comprises a backrest, an outer-layer protection pad, an internal buckle layer, a cross-shaped buckle, a first chair leg and a second chair leg, according to the chair, all parts are connected through the mortise and tenon joint structures to be assembled together, and the chair is combined with mortise and tenon joints through the mortise and tenon joint structures to achieve convenient transportation and fast assembly; the assembly method comprises the following steps: firstly, placing the second chair leg on the bottom layer, clamping the first chair leg into the bottom chair leg in a crossed manner, then placing the cross-shaped buckle, aligning the internal buckle layer with the lower protruding part for clamping, then placing the outer-layer protection pad, and finally aligning the backrest with the first chair leg and the second chair leg for clamping, thereby completing the assembly work of the te