Bean sprouts can be eaten when they have grown roots, which is generally not recommended. Mainly because the roots are difficult to clean, difficult to digest, lack of nutrients. 1. Bean sprouts root beard difficult to clean: bean sprouts root some even longer than sprouts, cleaning up especially troublesome, generally do bean sprouts will pinch off the root, with the root of the bean sprouts itself is no harm, just the root beard ugly, will affect the beauty of the bean sprouts. 2. Bean sprouts roots difficult to digest: eat bean sprouts is generally eat its rod and leaves, bean sprouts rod and leaves crisp and tasty, sufficient moisture, bean sprouts root is not, bean sprouts root more bacteria, lack of moisture, difficult to chew, eat into the stomach is not good to digest. 3. Bean sprouts root lack of nutrients: bean sprouts in the nutrients are concentrated in the rod and leaves, the root is not nutritious, just for the rod and leaves to transport water, so it is best to eat bean sprouts when the root removed.