Communication machine room heat dissipation device and communication equipment machine room

The invention discloses a communication machine room heat dissipation device and a communication equipment machine room, and relates to the technical field of communication machine rooms. According to the communication machine room heat dissipation device and the communication equipment machine room, when the device is used in the communication equipment machine room, by starting an air inlet fan and an air outlet fan, hot air in the machine room is exhausted out of the machine room through an inner air inlet pipe, a communication opening, a long round opening, an air outlet communication groove, a first outer connecting pipe and an exhaust outer pipe; external normal-temperature air is sucked into the machine room through the air inlet outer pipe, the second external connecting pipe, the air inlet communicating groove, the long round opening, the communicating opening and the inner air outlet pipe, and inlets and outlets of the inner air inlet pipe and the inner air outlet pipe extend to reasonable positions