Ventilation cabinet with instrument fixing structure

A ventilation cabinet with an instrument fixing structure comprises a ventilation cabinet body, the ventilation cabinet body is provided with an experiment bin, the experiment bin is provided with a ventilation pipe and an instrument fixing plate, one end of the ventilation pipe is communicated with the interior of the experiment bin, and the other end of the ventilation pipe is communicated with an external sucking pump; the instrument fixing plate is attached to the inner wall of the experiment bin and comprises a fixing plate body and a plurality of adjusting rods, a plurality of sliding grooves which are arranged in a criss-cross mode are formed in the front face of the fixing plate body, the section of each sliding groove is of a C-shaped structure, sliding blocks are fixedly arranged at the first ends of the adjusting rods, and the sliding blocks are arranged in the sliding grooves in a sliding mode; the periphery of the first end of the adjusting rod is in threaded connection with a positioning nut, an