Abstract: Information resources for mining enterprises was summarized as multi-source and heterogeneous after analyzing in depth the characteristics of them, based on which the technologies of data fusion to multi-source heterogeneous information were studied to satisfy the requirements of information integration for digital mines. Furthermore, the solution of data fusion was put forward. In the solution, not only the modes of storage and transformation for data in distributed systems were designed separately, but also the data sharing and interactive processing among them were realized through the integrated application of three kinds of data fusion technics for multi-source and heterogeneous information including closely and loosely coupled federated database, data warehouse, and data access middleware. It is feasible for mine enterprises to overcome the difficulties of information integration caused by the characteristics of multi-source and heterogeneous through the application of solution, which guarantee a basic data platform with safe, stable and efficient for digital mines.