Abstract：This article presents Professor HUANG Jianmei's clinical experience in treating oligomenorrhea due to polycystic ovary syndrome（PCOS）using the kidney-tonifying and blood-activating method. Professor HUANG Jianmei holds that kidney deficiency and blood stasis constitute the pivotal pathogenesis of oligomenorrhea in PCOS. Deficiency of kidney essence leads to scanty blood， and sluggish blood flow results in stasis that accumulates in the uterus. Prolonged conditions lead to blood stasis，which produces delayed menstruation，impaired follicular development，and ovulatory dysfunction. Therefore， the core strategy is to tonify the kidney and activate blood circulation. Professor HUANG employs the self-formulated Baizi Tiaojing Decoction to alleviate clinical symptoms， restore regular menstruation，and promote the maturation and release of follicles.