The invention relates to a fermentation device for edible fungi, and belongs to the technical field of biological fermentation. The fermentation device is characterized in that an air outlet of a control box communicates with an air inlet of a fermentor, an air return port of the control box communicates with another air outlet of the fermentor, a steam port of the control box communicates with a steam joint of the fermentor, a vent is set at the top of the control box, a one-way valve is installed below a first fan, a control mounting area is set in the control box, and various control devices are installed in the control mounting area and correspondingly connected to keys which are located in a control operation area and set on the outer lateral surface of the control box; a pressure gauge and a control valve are installed on the fermentor, and the central part of the fermentor body is connected with a balance support frame through a connecting shaft of the balance support frame; a fermentor body door is installed on one side of the fermentor body, and a motor is installed on the other side of the fermentor body; a stirring assembly is installed inside the fermentor body and connected to the motor; and a reticular bottom plate is installed under the stirring assembly inside the fermentor. The beneficial effects of the fermentation device are as below: zymocytes at the bottom of the fermentation device can not be killed due to high temperature, furthermore, yield of a fermentation process during single production is enhanced, production cost is reduced, fermentation efficiency and quality are improved, and the yield of fermentation is increased.