To explore the improvement effect on cross experiment between Simentaer cattle and Native cattle, the body weight and body type are respectively determined in nascent cattle, 6 months age＇ s cattle and 12 months age＇ s cattle of Xiben F1 generation in selective demonstration area. These data are apparently higher than that of native cattle. This hybridization technique has been introduced in 29 towns and brings notable economic benefit.