A network cabinet double-cooling source cooling interface device

The invention provides a network cabinet double-cooling source cooling interface device, comprising a return air passage, wherein the return air passage has a return air passage air outlet for connecting with an air conditioner return air outlet of an air conditioner, and an air return outlet for communicating with the inside of the cabinet; the return air passage is connected with the air conditioner return air outlet of the air conditioner. An air flow switching passage having an air flow switching passage inlet for connecting with an air supply outlet of the air conditioner for dischargingthe air flow from a heat exhaust port outside the system; A fresh air control channel having an air outlet for communicating with the interior of the cabinet, a fresh air outlet for introducing air flow outside the system, and an internal interface for communicating with the air flow switching channel; The air flow valve switching assembly is used for controlling the opening and closing of the newair outlet, the internal