Data production of BES offline analysis is described, filter criteria of events are presented, and the division of the DST data, the reconstructed events, is introduced.

• 本文介绍北京谱仪离线分析过程中数据生成的整个情况,包括事例过滤原则,重建的一般原理及物理分析(DST)数据的分类方法。