For supplying the capability of replaying the HLA federation execution data and solving the issues demanded by playback that data must be integrated as a whole, time order must be exactly, run efficiency should be highly and the solution should be general-purpose, this paper explores the issues of data replaying in HLA federation, analyzes the requirements and the impacts of HLA on playback, points out that the essentially general purpose is a concept of federation independent, and excogitates a data processing method to deal with the replayed data by means of object. Relying on the strategy of a concentrated playback federate, the playback solution was putted forward, which is based on the technology of data's object serializing and federates' automatic-generating. The solution realizes the goal to make a general purpose data playback. In the end, this paper introduces the application of the general-purpose playback tool.