The invention discloses a wireless monitor used for a prison. The wireless monitor comprises a wireless transmitter antenna, an installation fixing foot rest, a housing, and a camera lens. The camera lens is disposed on the front end of the housing, and the outer part of the camera lens is provided with a plurality of camera infrared luminotrons. The wireless transmitter antenna is disposed on the rear end of the housing, and the lower part of the wireless transmitter antenna is provided with a volume potentiometer. The lower part of the volume potentiometer is provided with a plurality of external audio video screen jacks, and the upper parts of the external audio video screen jacks are provided with external direct current power supply jacks. The upper parts of the external direct current power supply jacks are provided with audio video screen switches and frame switching keys, and the lower part of the rear end side of the housing is fixedly provided with an external alarming device jack. The lower part of the external alarming device jack is provided with an alarming device, and the bottom part of the housing is fixedly provided with a supporting shaft. The lower part of the supporting shaft is provided with the installation fixing foot rest, the bottom part of which is connected with a rotating valve. The wireless monitor used for the prison has advantages of simple structure, convenient installation, high monitoring efficiency, and abilities of realizing wireless monitoring and facilitating monitoring and management of prison.