The artificial enhancement technique of freshwater shrimp Macrobrachium nipponensis, in inland waters was studied in 2000~2001, It could be concluded that to select the egg-carrying shrimps whose embryos arc brown or analogous brown to hatching in net-cages, and distributed evenly in the whole water, and then release directly the larvae into the whole water is an effective method.Through this method, the output of Macrobrachium nipponensis in Lake Wanghu situated in county Yangxin of Hubei Province has been increased obviously from 10000 kg, before artificial enahneement (in 2000), to 35000kg,after artificial enahneement (in 2001).The numbers (N,kg) of egg-carrying shrimps which are hatched in nct-cages could be calculated according to the formula: N≥2Y·(1000·R·W)^-1,where R means the general recapture rate (normally, W(g/ind) meanvs mean body weight, and Y Ckg) means plan yield, seperately.