Professor YOU Zhao-ling has clinical practice with great concentration over the decades, the author has the honor to study from her, and summarizes her experience in diagnosis and treatment of PCOS infertility's follicular dysplasia. Professor YOU Zhao-ling thinks that the female reproduction is based on the ovary, and puts forward the academic thought of 'Assisting ovary to support follicle'; The pathogenesis of PCOS infertility's follicular dysplasia is complicated, and Professor You Zhao-ling initiated 'Youshi eight method', originated...