1, the appearance of different: rakkyo is generally round or oval, the surface is rough, and there is a layer of scaly leaves, buckwheat is generally long, the surface is smooth, and no impurities.

2, the efficacy of different: rakkyo has a sun-dispersing knots, the effect of Qi stagnation, buckwheat buckwheat has a heat detoxification, down the gas broad bowel, food stagnation effect.

3, the taste is different: rakkyo taste slightly sweet, slightly spicy flavor, buckwheat taste bitter, slightly spicy flavor.