The Determination of Regiona l Advantageous Industries and Evaluation of its Role to Economic Development 〖ＷＴ４”ＢＺ〗——A Case Study of Gansu Province〖ＪＺ）〗〖ＳＴＢＺ〗〖ＷＴ５ ＢＺ〗〖ＨＳ）〗 〖ＪＺ（〗Xue Yongjun （Yunnan Normal University，Kunming 650500，China）〖ＪＺ）〗〖ＨＴ〗  〖ＨＴ５”Ｋ〗〖ＷＴ５”ＨＺ〗〖ＫＧ２〗〔Ａｂｓｔｒａｃｔ〕〖ＷＴ５”ＢＺ〗This paper takes Gansu province as an example to study the determination of regional advantageous industries and evaluation of its role to economic development.This paper firstly determines the related indicators system of Gansu provinces cha racteristics of advantageous industries,and calculates the specific value of rel evant indicators.Secondly we determinate Gansu provinces advantageous industri es by using factor and principal components analysis method,and further study th e role of advantageous industries in promoting Gansu provinces economic develo pment.At last we draw conclusions and proposes countermeasures of Gansu province s advantageous industries development.