The invention relates to a liquid composite biological multi-control fertilizer. The invention is characterized in that the liquid composite biological multi-control fertilizer is prepared from the following raw materials in parts by weight: 1-3 parts of Streptomyces hygroscopicus solution, 1-3 parts of Streptomyces cinnamofuscus solution, 2-4 parts of Bacillus amyloliquefaciens solution, 2-4 parts of bacillus sphaericus solution, 7-15 parts of Bacillus mucilaginosus solution, 1-3 parts of Azotobacter chroococcum solution, 1-3 parts of Streptomyces aureochrogmoenes, 8-10 parts of Trichoderma viride fermentative degradation solution, 8-10 parts of matrix and 45-65 parts of sterilized water. The invention prepares a crop-absorbing carbohydrate and organic matter Trichoderma viride fermentative degradation solution, and provides high-efficiency beneficial microbial florae with phosphate solubilizing, potassium solubilizing, nitrogen fixation and disease resistance effects. The fertilizer can simultaneously perform the three functions of biological pesticide, biofertilizer and biological nutrients, and has the advantages of no toxicity or harm and no environment pollution. Compared with other fertilizers with the same nutrients, the crop yield is increased by 20%.