With gradually exhausting of main resources, the transition of west resource-style cities is urgent, however, the transition and sustainable development of west resource-style cities are seriously impeded by inharmonious development of urban economy, serious ecological environment breakdown, weak urban infrastructure, insufficient regional innovation ability, and social and democratic problems and so on. According to general law of resource-style city development, and by learning from foreign main mode of transition and development of resource-style cities, the west region of China should scientifically plan resource-style city development, establish and complete the related law system and specific organization agencies, improve investment environment to attract foreign investment, emphasize employment and consolidate employment training, and make preferential policies for supporting the transition of resource-style cities. The transition of resource-style cities is a systematic engineering, and the transition path includes industrial transition, enterprise transition, governmental transition and system transition.