According to Compendium of Materia Medica, antler, antler glue, antler cream, deer fetus, deer placenta, deer blood, deer brain, deer tail, deer kidney, deer tendon, deer fat, deer meat, deer head meat, deer bone, deer teeth and deer whip can be used as medicine. Among them, pilose antler, as a tonic, has high medicinal value and health care function, which can prevent and treat many diseases and become an important part of the prescription for treating all diseases. With the development of the times, the varieties of modern deer products are more abundant. In addition to all kinds of deer products recorded in ancient literature, deer dung, as an important part of agricultural sustainable development, has been widely used in the field of agricultural planting. As the raw material of leather, deerskin has become a "leather aristocrat" leading the high-end consumption of leather industry. Antlers, not only used as medicine, but also as handicrafts, have entered the international market and become the first choice raw materials for many craft products processing plants. After various processing techniques, the value of antlers has soared, which is not only the embodiment of artistic beauty, but also synonymous with good fortune.

With the increasing demand of consumers for deer products and people's understanding of deer products, people's demand for deer products is more detailed, thus making the classification of deer products more detailed. For example, deer blood used to be a kind of deer products, but now, because of different functions and sources, deer blood can be subdivided into velvet antler blood, deer blood, deer blood and other subclasses. Venison is similar to beef, and its taste and function are different according to different parts. Divided into back meat, tenderloin meat, tenderloin meat, belly meat, boneless belly meat, breast meat, eye meat, front meat, upper brain meat and shoulder meat.

Among many deer products, velvet antler is one of the main deer products. Velvet antler can be divided into different grades according to different harvest seasons. The velvet harvested in May and June every year is called "one-crop velvet". The velvet harvested in July and August every year is called "second-crop velvet". Because its "second-crop velvet" looks like a slingshot and has two forks, it is also called "two-fork velvet" or "two-bar velvet". According to different processing techniques, velvet antler can be divided into three common forms: velvet block, velvet powder and velvet liquid. Among them, velvet pieces can be divided into different grades according to different parts of velvet pieces.