Abstract: With the stability，agreeableness and the limitation of the strip mine ecological environment as a basis，an eco-environmental assessment index system was established with the method of AHP.The index system consists of 8 factors and 22 correlative indexes，among which the 8 factors includes landform，vegetation，climate，atmosphere，soil，groundwater，population and exploitation.The weight matrix of elements layer and correlative indexes were calculated by AHP method，concluding that the maximal elements which influenced strip mine ecological environment were exploitation，vegetation and climate，and the maximal indexes were surface disturbance rate，the rate of solid waste dumps，vegetation coverage，land reclamation rate and the proportion of the area with slope angles greater than 25°.With the help of membership function and fuzzy matrix established by fuzzy mathematics，along with the membership matrix from weight matrix，the situation of the strip mine ecological environment was evaluated.The result showed that the evaluation method was worthy to be popularized and applied since it was easy to use and the assessment accorded with the fact.

Key words: Open-pit mine, Ecological environment, AHP, Fuzzy mathematics, Assessment method