Abstract: In allusion to the problem of excessive experience dependence of common evaluation methods of informatization level which use expert scoring method to determine index weight, the paper proposed an evaluation method of informatization level of coal mine based on entropy weight method and grey correlation degree method. The evaluation method divides the evaluation system into 5 primary indexes and 19 secondary indexes, uses entropy weight method to determine value of index weight, uses grey correlation degree method to calculate correlation degree of evaluated object and reference sequence, and determines informatization level according to the correlation degree. Using the proposed method to evaluate informatization level of a coal mine, the results showed that the method can reflect actual situation of informatization level of the coal mine objectively and accurately.