手印在刑事追查中是非常重要的破案线索,也是重要的犯罪证据。通过手印重复现象和提取能够判断案情性质、锁定犯罪嫌疑人、分析作案手段等方面有着不可替代作用。所以,在犯罪现场找出犯罪嫌疑人的手印,并进行显现和提取是破案的关键。本文重点以汗液手印重复显现和提取作为出发点,探究不同情况下的汗液手印显现和提取方法。 Fingerprints in the criminal investigation is a very important clues to solve the case, but also important evidence of crime. Through the repeated phenomenon of fingerprints and extraction can determine the nature of the case, lock the suspects, analysis of crime and other means has an irreplaceable role. Therefore, finding out the handprint of the suspect at the scene of the crime and making appearances and withdrawals are the key to solving the case. This paper focuses on the repeated appearance and extraction of sweat fingerprints as a starting point to explore the sweat fingerprints appearance and extraction methods under different conditions.