The utility model discloses a plant roots viewing device that grows. The device is including cultivateing bearing box and root system culture tube, train bearing box and include box and box down, be provided with the LED lamp and go up the box thermoregulator in going up the box, the box is provided with down the box thermoregulator down, go up the box and be provided with the sealing layer down between the box, root system culture tube passes the sealing layer, this root system culture tube top from supreme flourishing the kinds cup support, flourishing kind glass of having set gradually down, and seted up with the nutrient solution mouth on the root system culture tube lateral wall, root system culture tube bottom is connected with the oxygen therapy pipe. Box and nowel body structure in the adoption of this device cultivation bearing box for observing plant roots and growing and observe, the altitude simulation seed is at the growing environment of soil, and more suitable seed growing grows, guarantees plant roots's growth completely, and the observation of the root system of being convenient for is cultivateed, and simple structure, convenient to use are swift, low cost, showing improvement labor efficiency and reduce intensity of labour.