Sterilizing device for pleurotus eryngii culture medium

The utility model relates to a sterilizing device and particularly relates to a sterilizing device for pleurotus eryngii culture medium. The sterilizing device for pleurotus eryngii culture medium comprises a liquid storage tank which is connected with a liquid suction pump, wherein the liquid suction pump is connected with a medicine injection pipeline which is provided with a concentric bearing, a hollow sleeve is fixedly arranged outside the concentric bearing, a medicine outlet hole is formed in the lower part of the hollow sleeve, and a stirring arm is fixedly arranged outside the hollow sleeve; the liquid suction pump is electrically connected with a controller, the hollow sleeve is provided with a stirring arm driving device, and the stirring arm driving device is connected with the controller. By adopting the structure, by stirring the culture medium by virtue of the stirring arm, extracting medicine liquor by virtue of the liquid suction pump and injecting the medicine liquor into the culture medium by virtue of the medicine injection pipeline and the hollow sleeve in the stirring process, the sterilizing device which sterilizes while stirs is good in sterilizing effect. In addition, the culture medium can be heated by virtue of a heater on the stirring arm, so that the sterilizing effect can be further enhanced.