本文讨论了内燃机气门机构优化设计的命题、优化目标及条件，指出了某些局部优化命题不能反映气门机构设计中实际可能存在的种种情况和相应不同的主要矛盾，以及某些优化目标和约束条件的不尽合理之处。本文提出了一个进行气门机构设计分析和总体优化的新思路，并介绍了相应的软件 This paper discusses the proposition, optimization objectives and conditions for the optimization design of internal combustion engine valve mechanism. It points out that some local optimization propositions can not reflect the actual situations and corresponding main contradictions in the valve mechanism design, as well as some optimization objectives and constraints Not entirely reasonable. This paper presents a new approach to valve design analysis and overall optimization, and introduced the corresponding software