本文设计并实现了基于FPGA(Field Programmable Gate Array)技术的新型视频加密系统,提出了一种基于m序列持续扰动Logistic混沌序列的视频加密方法,解决了在计算机有限精度下其动力学退化的问题,分析了改进的Logistic混沌序列及视频加密图的特性,包括密钥复杂性、初值敏感性、序列遍历性及相关性、加密图相关性。采用FPGA硬件实现满足了视频加密处理速度高的要求。实验证明,该系统具有良好的实时性和安全性。 In this paper, a new video encryption system based on FPGA (Field Programmable Gate Array) is designed and implemented. A video encryption method based on m-sequence continuous perturbation of Logistic chaotic sequence is proposed to solve the problem of dynamic degeneration under limited computer precision , Analyzes the characteristics of improved Logistic chaotic sequences and video encryption maps, including key complexity, initial value sensitivity, sequence ergodicity and correlation, and encryption graph correlation. Using FPGA hardware to meet the video encryption processing speed requirements. Experiments show that the system has good real-time and security.