为解决传统能量分析器原理复杂、成本高昂且不适用于课堂演示的问题，本文专为教学场景优化设计了一种基于匀强电场抛物线运动模型的对称式能量分析器.通过COMSOL仿真验证，该分析器在保证1.29%能量分辨率的同时，具有宽阔电压扫描平台和较大发散半角容限±0.212°.该装置结构简单、能区可调、支持低电压工作模式，适配大中学电磁场与带电粒子运动的教学演示及基础测量.为低成本、高成功率的物理教学仪器开发提供了行之有效的解决方案.

To address the issues of complex principles, high cost, and unsuitability for classroom demonstration in traditional energy analyzers, this paper presents a symmetric energy analyzer specifically optimized for teaching scenarios, based on the parabolic motion model in a uniform electric field. COMSOL simulation results verify that the analyzer achieves an energy resolution of 1.29% while offering a broad voltage scanning plateau and a large divergence halfangle tolerance of ±0.212°. Featuring a simple structure, adjustable energy range, and support for lowvoltage operation, the device is suitable for teaching demonstrations and basic measurements related to electromagnetic fields and charged particle motion in secondary schools and universities. It provides an effective solution for developing lowcost, highsuccessrate physics teaching instruments.