The market price of fresh leeches is 10-50 yuan/kg, and the dried product is 20-100 yuan/kg

Expanded information:

In recent years, leech preparations have been newly found to be effective in combating cardiovascular and cerebrovascular diseases and anti-cancer. Historically, it is mainly natural fishing, because of the abuse of pesticides, chemical fertilizers, and industrial and agricultural "three wastes" pollution of the environment, the wild natural resources have been sharply reduced, with the leeches of the depth of the development of medicinal value of the market demand potential is huge. In southern China, around 1995, we started to catch natural seedlings, and the first time we raised leeches artificially, and we got success. In the northern part of the country, leeches have not been bred for seedling and technical reasons.　

The body length is slightly flat, and at first glance it looks like a cylinder, with a length of about 2 to 2.5 centimeters and a width of about 2 to 3 millimeters. Dorsal green with black, there are 5 yellow longitudinal lines, the ventral surface is flat, gray-green, no miscellaneous color spots, the overall ring pattern is remarkable, the body node consists of 5 rings, each ring is similar in width. Eyes 10, arranged in a ∩ shape, mouth with 3 semicircular jaws enclosing a Y shape, when sucking on the animal's body, use this jaws to drill into the skin, sucking up blood, from the pharynx through the esophagus and stored throughout the digestive tract and in the blind sac. All segments of the body have excretory pores, opening ventrally. The male and female genital pores are four rings apart, each opening between the rings. The anterior sucker is easier to see, the posterior sucker is more prominent and adsorbent.