A protective case with multiple air tunnels for the protective case, so the heat absorbed by contact blocks from the electronic equipment is radiated rapidly out of the protective case through vent pipes. When the electronic equipment is supported up to watch movie or play games, because the hot air will raise and be exhausted from the upper part, and the fresh cool air will come inside from lower part of the protective case, as a result, the ventilation is accelerated and the heat dissipation performance is greatly improved.