The invention discloses a green manure for preventing and controlling pests of jujube trees. The green manure for preventing and controlling the pests of the jujube trees is mainly prepared from the following raw materials in parts by weight: 50-60 parts of astragalus sinicus stems and leaves, 10-20 parts of fresh melia azedarach leaves, 10-20 parts of tobacco stems and leaves, 10-20 parts of sesame seed cake meal, 5-10 parts of spirulina, 5-10 parts of tarragon herb, 5-10 parts of hypericum perforatum herb, 5-10 parts of derris root and 15-20 parts of eymogenic bacteria. On the one hand, thegreen manure can provide nutrition needed by the growth of the jujube trees, on the other hand, diseases and pests of the jujube trees can be prevented and controlled, the use amount of pesticide is reduced, and the disease resistance of the jujube trees can be improved. The green manure provided by the invention has the advantages of high efficiency, low toxicity, low residue, good quick effect,long lasting period, environmental friendliness and the like.