This paper introduced the principle of fingerprint identification technology, and an ameliorated beforehand processing arithmetic was put forward. The fingerprint identification technology based on the arithmetic was discussed and evaluated.

• 摘要文章介绍了指纹识别的基本原理，提出了一种改进的指纹识别预处理算法，并对基于该预处理算法的指纹识别技术作了讨论和评价。