The present invention relates to a structure of a fermenter, wherein the fermenter comprises a container body, a top cover and a net bag member, the container body is substantially a barrel with an open top, and a valve is arranged outside the bottom of the container body. The body has a top cover at the top opening of the container body, and two vent pipes having a one-way valve are respectively disposed on the top cover, and a transparent window is added on the top cover to observe the fermentation condition of the fermentation body in the container body. And a lighting element is disposed on the bottom surface of the top cover, the lighting element includes a battery part and a light source part, and the light source of the lighting element can be used to illuminate the fermented material, so as to clearly observe the fermentation condition of the fermented material in the container body. The purpose of the foregoing net bag component is as a product for fermenting vegetables or fruits, comprising a long strip mesh bag body and at least one spaced fixing ring fixed on the outside of the mesh bag, and each fixing ring The outer diameter of the bag body is smaller than the inner diameter of the container body, and the bundle mouth is closed and can be opened on the upper and lower ends of the net bag body, and the vegetable bag or the fruit can be loaded into the finished vegetable or fruit by the folding property of the net bag component. The hanging body can be placed in the container body, and a fixed pressing plate can be placed on the mesh bag component, and the regular weight is pressed on the fixed pressing plate to generate a uniform pressure and pressure effect. Directly lifting and lowering the entire net bag component and opening the bottom beam port, the vegetable or fruit that has been fermented can be discharged, saving time and labor, and being a novel, progressive and industrially applicable creation. .本創作係有關一種發酵桶之結構，其中該發酵桶包括一容器本體、一頂蓋及一網袋元件，該容器本體大致呈
