The utility model discloses a heat dissipation device for computer communication equipment. The computer case comprises a case assembly, a heat dissipation assembly and a connecting assembly, the caseassembly comprises a supporting frame, a supporting plate, communication equipment, a working frame and a sliding rail frame, the supporting plate is arranged on the inner side wall of the supportingframe and fixedly connected with the supporting frame, and the communication equipment is located on the upper surface of the supporting plate and fixedly connected with the supporting plate; motor driving gear to rotate, gear and rack meshing transmission, therefore, the working frame is driven to slide on the sliding rail frame; the fan can drive the fan blades to rotate; and the working frameslides to drive the fans to slide among the communication equipment, so that the effect of continuously dissipating heat of a plurality of pieces of communication equipment is achieved, the number ofthe fans is reduced, the cost is reduced, the push-pull plate slides on the working frame, and the effect of an anti-skid groove in the bottom of the working frame is achieved.