介绍了大型甲醇和一氧化碳生产装置在线分析系统的设计和应用。对仪器选定的评估标准、取样系统设计和制作、在线分析系统安装和投运等问题作了讨论。此在线分析系统已成功投入运行。 The design and application of on-line analytical system for large-scale methanol and carbon monoxide production equipment are introduced. The selection criteria of the instrument, sampling system design and production, on-line analysis of system installation and operation and other issues were discussed. This online analysis system has been successfully put into operation.