The invention relates to a router with a good heat dissipation effect. The router comprises a main body and at least two antennas, and further comprises a reinforcing mechanism and a heat dissipatingmechanism, wherein the reinforcing mechanism comprises a supporting rod, a power assembly, two first filter screens and two reinforcing assemblies, the heat dissipating mechanism comprises a driving assembly, a transmission assembly, a cover plate, a second filter screen, a fan, two lifting sleeve pipes, two screw rods and two first gear. According to the router with the good heat dissipation effect, two supporting plates can be driven to get away from each other by means of the reinforcing mechanism, thus the router is fixed inside a weak current box by means of the supporting plates, the mounting stability of the router is improved, and the assembly and disassembly convenience of the router is improved; and by means of the heat dissipating mechanism, the second filter screen can be driven to be lifted above the main body, and then the circulation flow of air inside the router is realized by using the fan, thus the heat dissipating function of the router is achieved, and the probability that the router fails due to over-high temperature is reduced.