The invention discloses a compound microbial fertilizer, comprising the following raw materials in parts by weight: 40-50 parts of crop straws, 50-60 parts of swine wastes, 20-24 parts of bean pulp, 12-16 parts of egg shells, 10-15 parts of vinasse, 20-25 parts of attapulgite, 18-22 parts of medical stones, 6-8 parts of schaumgyps, 10-12 parts of humus, 4-5 parts of lupulus, 5-6 parts of sophora alopecuroide, 3-4 parts of radix isatidis, 4-6 parts of sweet wormwood, 1-2 parts of EM fungicide and a proper amount of water. According to the compound microbial fertilizer disclosed by the invention, agricultural and sideline products such as the crop straws, the swine wastes, the bean pulp and the like are taken as main raw materials, so that the compound microbial fertilizer not only is available in materials, low in price and cost, and abundant in nutrient, but also can improve the soil structure; the added vinasse contains a plurality of organic compounds, vitamins B and cellulose, also contains abundant crude proteins and crude fat, can be used as an energy source fertilizer, and assisted with multifunctional natural raw materials with abundant nutrients, such as the attapulgite, the medical stones and the like, so that the compound microbial fertilizer has the advantages that the water-retaining property, the adsorbability and the like of the soil are increased. By adopting the fertilizer disclosed by the invention, resources are fully utilized, productive investment is reduced, the pollution caused by a chemical fertilizer is reduced, and the compound microbial fertilizer has certain environmental and economic benefits.