A display support seat is mounted on a display, such that the display is able to be located on a plane after being supported. In the present invention, a main seat and a cover are mounted to form an accommodation space, and the display is mounted on the main seat. Also, the accommodation space is provided for a main board module to be disposed therein, so as to form a computer host. In such a manner, assembly space demands for a computer and a display is effectively reduced. Moreover, a user may select that the present invention merely serves as a support seat, or merely serves as a computer host, or serve as a support seat and a computer host at the same time depending on practical use demands.