Abstract: Based on present handwriting examination practicein China and previous findings of research, causes and regularpatterns of handwriting variation, produced by writer抯 physi-ological and psychological changes, writing condition and envi-ronment changes, are investigated. The results are instructive forpractical handwriting comparison.

Key words: handwriting comparision, Condition-changedhandwriting

摘要： 研究现阶段我国笔迹检验实践情况和吸收己有的笔迹学研究成果,分析书写人受自身生理、心理状态影响和受制于特殊的书写条件、书写环境等因素导致的条件变化笔迹的形成原因、特点、变化规律,对笔迹鉴定的实践有十分重要的指导意义。

关键词: 笔迹鉴定, 条件变化笔迹