详细论述了一种颌面部８道肌电检测系统的设计原理与处理方法．该系统在硬件上采用了高灵敏度的肌电放大与接地电极共模激励、光电隔离等技术，提高了系统的抗阻塞和抗共模干扰能力．在软件上采用了数字消除基线移动、相关分析提取静息电位和谱分析等处理措施，使系统能够满足多种临床研究与应用 This paper discusses in detail the design principle and treatment of a maxillofacial 8-channel electromyography system. The system uses high sensitivity of the EMG amplification and grounding electrode common mode excitation, optical isolation and other technologies to improve the system of anti-blocking and anti-common mode interference ability. In the software, digital elimination of baseline movement, correlation analysis and extraction of potential and spectrum analysis and other treatment measures, the system can meet a variety of clinical research and application