以玉米杂交种及部分自交系为材料，利用改良的蛋白质电泳技术进行纯度鉴定。改进后的技术，鉴定周期缩短近一倍，成本显著降低，技术操作可行性强，重复性好。检测数据经田间种植鉴定、相关性和一致性分析证明，蛋白质电泳和田间种植鉴定两种检测方法结果一致，电泳技术可以作为品种纯度鉴定的可靠方法。 Maize hybrids and some inbred lines were used as materials to improve the purity of protein by using improved protein electrophoresis. Improved technology, nearly double the identification cycle, significantly reduce costs, technical operation feasibility and repeatability. The test data were identified by field planting. Correlation and consistency analysis showed that the results of the two methods were consistent with those of protein electrophoresis and field planting. Electrophoresis could be used as a reliable method to identify the purity of varieties.