This paper chiefly analyzes the influence of joining WTO has on the investment climate of the agriculture, main manufacturing, service and high technology industry in Hubei province, it then puts forward some countermeasures, which include clearing up several conceptions, making strategic tactics in external trade, accelerating the structure of industies to optimize and reorganizing the capital fund, as well as readjusting the industrial internal machenism which is to consolidate the basic place of agriculture, strengthen the technological innavotion of manufacturing industry, sustain the tech...