冷背药材品种繁多，用量又小，经营起来比较困难。不象常用大宗药材品种那样，不管价格高低，有货就不愁卖。而冷背药材有的品种则数年卖不出一斤，过期了就只好扔掉，经营商家的风险较大。同时，由于经营商家少，所有品种又难以完备，有的求购商家找不到货源，这无疑又增加了经营难度。但冷背药材并不是缺少货源，只是由于其不常用或用量小而没有得到经营者的重视。
A variety of herbal extracts, the amount of small business, it is difficult to. Not like the commonly used medicinal materials, no matter the price, there is no worry about selling goods. Some varieties of herbal extracts and a few years can not sell a pound, expired had to throw away, big business risk management. At the same time, because of the small business business, all varieties are difficult to complete, and some buyers can not find the source of goods, which undoubtedly increases the difficulty of operation. But it is not a lack of supply of herbal extracts, just because it is not commonly used or small amount without operator attention.