Based on the analysis of the connotation and the decision elements of the enterprise core competitive capacity, the evaluation index system is designed, the mathematics models for the fuzzy synthesis evaluation are upbuilt. The necessity for evaluationg the core competitve and transfer premise before the decline mines in the eastern region transferring to the western energy concentrative area are expounded. The core competitive capacity of Xuzhou Mine Group Corporation (a large failing mine) is evaluated and analyzed and some suggestions about the policy are posed.