Empty capsule is the necessary accessory material in the production of capsule and its quality is one of the most important factors. The traditional empty capsule is most make of gelatin prepared from animals such as pigs and cows as it raw materials, and the properties of which decide its disadvantages such as high contents of water, easy to absorb humidity and transfer the moisture into the drug contained in it, leading to the failure of medicine and easy to weather, crash and degenerate under the influence of outside factors. In addition, it might be rejected by the people in Islamic countries and regions. Therefore, searching for a replacing product is an inevitable development trend and so empty capsule, a new product and called "plant capsule" has come into being and become a favorite in the capsule industry. The HPMC empty capsule developed autonomously by our manufacturer is just this kind of plant capsule.