Ginger is a plant that can be eaten and used medicinally. Many parts of the country have planted, in the year “white dew” around the harvest of ginger customary called “new ginger”, “young ginger”; next year’s ginger called ‘old ginger’, medicinal use of such better. Ginger has small species of ginger, large species of ginger, mountain ginger (wild ginger) and other varieties, the medicinal use of small species of ginger is good, customary small species of ginger called “small yellow ginger”, small yellow ginger cut pure yellow, taste spicy and thick, tender meat, flavor, fine fiber. Large species of ginger is grayish yellow with iron color, thicker fiber, spicy and fragrance are not as good as small species of ginger, the medicinal effect is also poor. There is a kind of ginger is between the large species of ginger and small species of ginger varieties, the quality is also better than the large species of ginger. Because of the difference between the geographical growth of ginger is not the same, but the quality of the standard is the same, to the cross-sectional color of golden, spicy and aromatic flavor, fine fiber is good. Yellow is earth, earthy its taste for fragrance, so small yellow ginger special into the Kun earth good medicine. Soil wet, earth disease, most likely to lead to dampness stagnation, and small yellow ginger spicy nature of the passage, for the special into the earth to transform wet medicine. Said the text of the explanation of ginger for the “damp dish also”, “Shennong Ben Cao Jing” said it “to remove the odor, through the gods”, Chen Xiu Yuan explained the “effect of supporting Yang and suppressing Yin”. Ginger can not only detoxify the poison of the herb, but also enhance the power of the herb to support Yang and warming and dispersal, and can also be used for its clear aroma to dissolve the foul qi to transport the water and dampness in the earth, and open the way for the flow of qi all over the body, which can be said to be a multi-purpose. The amount used is generally half a tael (25 grams), a tael (50 grams), more and more equal to the amount of the seeds. When using cannon ginger, it is mostly not used with ginger.