The invention relates to a tomato soilless culture method, and belongs to the soilless culture technical field; the method comprises the following steps: matrix preparation, water soluble fertilizer preparation, greenhouse equipment configuration, wobble plate soil loading, spot planting and earthing, watering germination, colonization preparation, colonization, colonization management and harvesting; the matrix comprises coco coir, straw powder, turf, vermiculite, mushroom slag, wood chip, expanded perlite and iron sheet dendrobium; the water soluble fertilizer comprises a first nutrient solution and a second nutrient solution; the first nutrient solution comprises calcium nitrate, potassium nitrate, ammonium nitrate, potassium dihydrogen phosphate, potassium sulfate, magnesium sulfate, EDDHA-PE-6, manganese sulfate, copper sulphate, ammonium molybdate, borax, zinc sulfate and water; the second nutrient solution refers to trace element nutrient solution; the tomato soilless culture method is green and environmental protection, can reasonably utilize planting space in a planting process, and the matrix and nutrient solution are rich in nutrition; the tomato grown by the method is nontoxic and pollution-free, and suitable for mass production and promotion.