1. Grass cardamom is also known as grass cardamom, big grass cardamom, cardamom, leaking cardamom, grass cardamom kernel, flying thunder seed and grass fruit. Cardamom comes from the dried nearly mature seeds of Alpinia of the Zingiberaceae family.

2. Cardamom has a pungent taste and is a warm medicine. Returns to the stomach and spleen meridians. The main component of cardamom is volatile oil. The 2015 edition of the "Pharmacopoeia of the People's Republic of China" stipulates that the content of volatile oil in cardamom shall not be less than 1.0 (ml/g).