The disclosure discloses a heat dissipation mechanism of the mobile terminal and terminal having the heat dissipation mechanism. The heat dissipation mechanism includes that: a shell provided with at least one heat dissipation window and a moving part connected with the shell, wherein the moving part is used for opening or closing the at least one heat dissipation window. By adopting embodiments of the disclosure, the heat dissipation mechanism can effectively reduce surface temperature when a terminal device operators and can be suitable for devices having relatively high power consumption and having relatively high requirements for ultra-thinness and miniaturization.