The concept of "Yang transforms Qi, while Yin shapes form" in the Yin-Yang Qi transformation theory provides a profound summary of human physiological functions. Professor Lei Lei posits that the pathogenesis of mass-type dysmenorrhea is complex, with its core mechanism rooted in "insufficient Yang to transform Qi and excessive Yin to shape form." Correcting this Yin-Yang imbalance is pivotal in diagnosing and treating the condition. He proposes "warming Yang to transform Yin" as the therapeutic principle and has developed a triple-regimen approach comprising the empirical formulas Xiaozheng Decoction, Enema Formula, and Topical Application Formula. This tailored regimen demonstrates significant clinical efficacy. This article systematically reviews Professor Lei Lei‘s diagnostic and therapeutic strategies for mass-type dysmenorrhea from the perspective of traditional Chinese medicine‘s Yin-Yang Qi transformation theory, aiming to offer insights and references for clinical practice.