Abstract: Based on the analysis of stamp impression dating cases， the qualitative and quantitative phase change characteristics of stamp impressions and their application in forensic practice were introduced. The possibility of formulating the quantitative characteristics into a statistic model was discussed.

Key words: stamp impression, stamp impression dating, statistic analysis

摘要： 通过对近年来我们受理的印章印文盖印时间鉴定实际案例进行系统的研究，较全面地阐述了印章印文阶段性特征中常见定性特征和定量特征及其在鉴定实践中的运用，并重点讨论了印文阶段性特征中定量特征在鉴定实践中的运用，初步探讨了进一步利用这些定量特征建立统计学模型的可能性。

关键词: 印章印文, 盖印时间, 统计学模型