Constant-temperature and constant-humidity fresh air system for animal laboratory

The utility model discloses an animal laboratory constant temperature and humidity fresh air system which comprises a constant temperature and humidity machine, fresh air inlet pipes are symmetrically arranged on the top of the constant temperature and humidity machine, a fresh air inlet mechanism is connected and installed above the two fresh air inlet pipes, and an air inlet and outlet mechanism is arranged on the constant temperature and humidity machine. A fixing strip is fixedly connected to the middle of the upper portion of the rear side wall of the constant temperature and humidity machine, and fixing bases are symmetrically and fixedly connected to the rear side wall of the fixing strip. The animal laboratory constant-temperature and constant-humidity fresh air device adopts a good integrated structural design, is good in convenience during actual installation and arrangement work, is provided with a good fixed installation mechanism, is good in installation performance during actual installation wor