First, different morphological characteristics 1, ginger perennial roots copy herbs. The rhizome is fleshy, thick, flat, fragrant and spicy. Leaves in rows, thorium-shaped to strip-lanceolate, 15-30 cm long, about 2 cm wide, tapering at the apex and tapering at the base, smooth and hairless, with leaf sheaths holding stems and sessile. 2. Alpinia officinarum is a perennial herb with a height of 35 ~ 70 cm. Rhizomes are transverse and branched. Leaves usually 2 ~ 5; Subsessile to petiole up to 2cm long; Ligule 2-lobed, ca. 2mm long, pubescent; Leaf blade is lanceolate or oblong, 25 ~ 4～7cm long and 4 ~ 7 cm wide, both ends are tapered, the apex has a small tip, and both surfaces, especially under the leaves, are pubescent. Second, the distribution range is different 1, and ginger is in the central and eastern parts of China, attacking the southeast to the southwest, Laifeng, Tongshan, Yangxin, Echeng, Xianning and Tongling. Changyi, Anqiu and other cities in Shandong Province are widely known for cultivation, and it is also common in tropical Asia. 2. Alpinia is distributed in Zhejiang, Jiangxi, Fujian, Taiwan Province, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Guizhou and Yunnan. Third, the role is different 1, ginger ginger contains spicy and aromatic components. The pungent component is "gingerol" in an aromatic volatile oil. Among them, there are mainly gingerol terpenes, fennel, camphorterpenes, gingerol, eucalyptus oil essence, starch, mucus and so on. Make condiments 2, Alpinia officinarum as a herbal medicine, with rhizome as medicine.