在办案实践中，笔者遇到一起条件变化笔迹的检验。由于当事人文化程度较低，平时很少从事书写活动，加上受到书写条件，如光照条件、承受客体、书写姿势、心理状态及书写环境的影响，使原本字迹数量较少的检材中笔划出现明显的抖动、弯曲和重描现象。这类现象是在书写人固有的 In the handling of cases, I encountered a condition change handwriting test. Due to the low educational level of the parties, few writers are usually engaged in the writing activities. In addition, due to the influence of writing conditions, such as light conditions, subject matter, writing posture, mental state and writing environment, Obvious jitter, bending and redrawing phenomenon. This kind of phenomenon is inherent in the writer