Abstract: In the seedling raising device for an aerial seed cultivation of plants, which is capable of aerially cultivating offspring plants, a specific seedling raising plate of a suspending type, and watering and drainage devices, are set in a cultivating receptacle to increase the number of the offspring plants per a cultivation area; nutrient solution is separately supplied to cultivating units through a drip irrigator such that the respective mother plant cultivating units are separated from one another, thereby reducing the infection rate of blight and preventing one mother plant from being infected by another mother plant, thus improving productivity of the plants and largely increasing the number of the offspring plants.