In order to promote the development of grassland,stack base and local ecological agriculture,we carried out experiment of selecting grasses with strong regeneration,high production and high WUE(water using efficiency).We studied the production,the rate of growth and the efficiency of water usage of regenerating grasses of 4 types in 2005.It shows that the second generation grasses of introduced types have higher production than the local grass,hooked Bristlegrass.Three types of introduced grasses,Macroptilium atropurpureum Siratro,Setaria sphacelata Narok,Brachiaria decumbens Basilisk are high throughput,more WUE,and stronger ability of regenerating,they thus are the grasses suitably planted in the hot-dry area of Jinsha River watershed.