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目的：研究不同药用部位及不同采收期疏花荠苧总黄酮的含量变化，为确定疏花荠苧药材药用部位及最佳采收期提供依据。方法：采用分光光度法测定总黄酮含量。结果：不同采收期疏花荠苧药材总黄酮含量以9月为高；不同药用部位，叶中总黄酮含量明显高于茎、根。结论：建议疏花荠苧药材采收以9月地上部分为宜。“,”Objective:To study the content of total flavones in different parts of Mosla dianthera harvested in different seasons to pro-vide reference for the determination of optimal medicinal part and harvesting time of the plant. Methods:The total flavones content of M. dianthera was determined by TLC-UV. Results:The content of total flavones extracted from the plant in September was highest, and that in the leaves was much higher than that in the stems or the roots. Conclusion:It is advisable to harvest the aerial parts of M. dianthera in September.