Embodiments of the present invention provide a heat dissipater and relate to the communications field. The heat dissipater includes a sub heat dissipater, a connecting apparatus, and a shared bracket; the sub heat dissipater is connected to the shared bracket through the connecting apparatus; the sub heat dissipater includes a first heat conducting surface, and the sub heat dissipater contacts a first heat source through the first heat conducting surface to dissipate heat for the first heat source; the shared bracket includes a second heat conducting surface, and the shared bracket contacts a second heat source through the second heat conducting surface to dissipate heat for the second heat source; and the second heat conducting surface and the sub heat dissipater are disposed in different positions of the shared bracket respectively.