Noise reduction structure of voice recognition device

A noise reduction structure of a voice recognition device disclosed by the present invention comprises a working shell, one side wall of the working shell is provided with a sound insulation layer, the sound insulation layer is internally provided with a microphone, the microphone is provided with a sound pickup, one end of the sound pickup far away from the microphone penetrates through the sound insulation layer and the working shell, the working shell is provided with an automatic assembly, and the automatic assembly is connected with the sound insulation layer. The automatic assembly comprises a workbench, a working opening is formed in one side wall of the workbench, the working shell is slidably connected into the working opening, a telescopic motor is arranged on the outer wall of one side of the workbench, a telescopic shaft is arranged on the telescopic motor, and the end, away from the telescopic motor, of the telescopic shaft penetrates through the workbench and is fixedly connected to the working