This paper, based on a case study of Songtao manganese integrated exploration area in Guizhou, uses entire life cycle to discuss its environmental issues during manganese mining and processing, evaluates servicing values of ecological system, regional carbon fixation capacity, and carbon emission from mining, shipping and fine processing, and studies its environmental impacts evolutional path of study area from 2003 to 2015. Mine environment has been severely impacted in the three stages, of which loss in ecological system service is in mining stage, carbon emission impacts in shipping and processing. The regional ecological environment is increasingly impacted as mining and developing manganese activities grow. This paper presents suggestions on consolidating mining rights, raising concentration of electrolytic manganese companies, improving mining technology and boosting environmental controls in order to reduce environmental impacts.