Much information in MES is unstructured, such as drawing and document. It is very important for MES to reasonably manage and reuse the unstructured information. A new management strategy of the unstructured information is put forward in the paper, First the basic management method and realization procedure are simply presented; Second the technologies related to the management strategy such as layout analysis, content structured, data management based on xml schema and data query & analysis are analyzed in details; Last the practical use and further research direction of the strategy are depicted. The value of the unstructured information can greatly enhanced through the strategy put forward in the paper.