The invention relates to a soilless culture method suitable for a wall surface three-dimensional soilless culture device, also called a wall type soilless culture method for vegetables, and belongs to the technical field of crop culture. A seedling raising substrate is prepared by mixing fafard peat, pearlstone and carbendazim in a mass ratio of 200:50:1; a plug tray is coated with non-woven fabrics for preserving heat and moisture, and electric heat wires are spread under the plug tray to ensure that the temperature of a seedbed is 25+/-1DEG C; when two leaves and one heart appear, seedlingscan be transplanted to transplanting cups formed by cutting PVC tubes at a specific angle; after fix planting for one week, the seedlings survive, and the transplanting cups are inserted to the transplanting holes of the wall surface three-dimensional soilless culture device; and nutrient solution is specially prepared for leafy vegetables, has 80 percent of urinary nitrogen, and can quickly promote leaf greening and growth. The soilless culture method improves the survival rate of plants cultured by the wall surface three-dimensional soilless culture device, improves the growing neatness of the cultured plants, and enhances aesthetic properties.