The invention discloses a soilless cutting seedling and cultivating method. The seedling method comprises the following steps of: planting pretreated seedling material on an aerosol cultivating devicefor seedling, wherein the aerosol cultivating conditions are as follows: the temperature is 15-33 DEG C, the humidity is 45-85%, and the illumination is 1000-3500 Lux. According to the seedling method, a large number of plant seedlings can be rapidly propagated in a short time under the condition that the female parent plant resources are very limited, so that the excellent properties of the female parents can be maintained, the seedling cost is reduced, a powerful guarantee for the industrialized production and large-scale planting of the seedlings of the plants, the seeds of which are difficult to obtain and the seedling growing period of the seeds of which is longer; the seedling method is suitable for medlar, honeysuckle, forsythia, red-back anemone, leaf sweet potato, safflower apricot, mangosteen, golden cauliflower, Malabar spinach, tomatoes, eggplants, cucumbers, mints, wild chrysanthemum flowers, swallowwort herbs, ginseng vegetables, pickles, ice vegetables, purslane, wintercold vegetables, schizonepeta, basil and other varieties of plants.