The invention relates to a nutrient medium for okra soilless culture, which is composed of the following components in parts by weight: 500-700 parts of biogas residue, 100-300 parts of chicken manure, 50-75 parts of vermiculite, 50-75 parts of perlite, 50-70 parts of zeolite, 48-90 parts of fermented composite microbial inoculant and 10-25 parts of minor element. The nutrient medium for okra soilless culture has the advantages of favorable water absorptivity, favorable water retention property and sufficient fertility, can loosen the soil, and contains rich humus; and the pH value of the medium is 6-8. The nutrient medium for okra soilless culture can reduce the occurrence of root burning, bacterium burning, diseases and pests. By adopting the fermented composite microbial inoculant, the nutrient medium for okra soilless culture can well eliminate harmful microbes in the soil, reduces the diseases and pests, contains abundant nutrients required by okra, and promotes the vigorous growth, high disease resistance, developed root system, long growth period and fruiting of the okra. The nutrient medium for okra soilless culture contains abundant nutrients required by okra growth, and the nutrients can be released slowly, so that the nutrient medium has strong and long-term fertility.