To study their coupling coordination between mineral resources development and economic growth in Sichuan province, this paper uses investment intensity, industrial scale and economic development to mark mineral resource development level, and uses economic strength, local financing level and investment & consumption level to mark economic development level, and selects 14 indicators to establish a comprehensive system to evaluate the mineral resources development and economic development level. Entropy is used to give weight to each indicator, and TOPSIS is applied to score the mineral resource development level and economic development level from 2006 to 2015. Slope correlation model in the gray system is meant to determine their correlation degree. Coupling coordination model is employed to evaluate their coordinated development level. Results show a good correlation between the both, rising with fluctuation, from low level, to medium and to high level coupling stages, indicating a sound coupling coordination. It means a good achievement in mineral resources overall planning and economic structure transformation in Sichuan province.