A grow box comprises a box body and a cover which are matched with each other; a planting unit arranged on the grow box for planting plants; a nutrient solution supply unit comprising a nutrient solution storage chamber and an atomizer, and the nutrient solution is supplied to the roots of the plants under the condition that the plants lack nutrient solution, wherein the nutrient solution storage chamber is constructed as a part of box body space which is separated from the box body by a partition plate. The present invention further discloses a plant grower using the same grow box with a supporting device. In addition, various sensors are arranged in the grow box and the plant grower to perform automatic induction without the need of manual operation, so that the pleasure and the simplicity of planting are enhanced.