Abstract:  In order to promote quantitative evaluation of scientized mining，this paper proposes six connotative indexes which can inflect the scientific mining，such as safety mining，green mining，high-recovery mining，intensive & high-efficiency mining，intellectualized mining and absorption-cost mining．By the way，four extension indexes which are closely related to scientized mining as follows，resource endowments，security technology guarantee，scientific management guarantee，economic and social benefits，at last the“10-42-63”structure evaluation system of scientized mining has been built．Having discussed the relationship between scientific mining and extension theory，meanwhile，the theory based on the methods as follows: extension theory，subjective dynamic determining weights method，linear weighted integrated method and expert setting parameter method．The assessment method of the scientized mining grade is proposed，research and develop ESSM，a soft applicable to evaluate all types of underground mine，which can calculate scientized mining coefficient(ScMC)and scientized mining rank(ScMR)separately or simultaneously is founded．

Key words:  scientized mining, extension theory, scientized mining grade, evaluation indexes system