The invention discloses a vegetable culture medium. The vegetable culture medium is prepared from the following raw materials: agroforestry wastes, soybean meals, chicken manures, organic granular slow-release fertilizer, a microbial starter culture, a mitogenic agent, a bonder, charcoal powder and ammonium chloride. The preparation method is characterized in that the materials above are treated by mixing, pressing and shaping, inactivating through microwave, ventilating and moisture exhausting to prepare the vegetable culture medium. The vegetable culture medium is low in cost, energy-saving, environmentally friendly, high in penetrability and fast and uniform to heat under microwave inactivating, and achieves the purposes of inactivating and drying synchronously; pathogenic bacteria and worm eggs in the medium can be inactivated completely; the proper pH is beneficial for the growth of vegetable; the nutrients are sufficient and a lot of organic substances are contained, so that various nutrients can be provided continuously for the growth of the vegetables as requirement; the physiological cycle can be healthily achieved on the premise that no chemical fertilizer and pesticides are applied; the problem of continuous cropping of soil can be solved; the continuous cropping can be carried out; the soil can repeatedly used at a plurality of times; therefore, the use cost of the user is greatly decreased.