Abstract： This paper summarizes MO Xiaofeng's clinical experience in treating perimenopausal insomnia with umbilical acupuncture. MO Xiaofeng considers the disease essence as yin-yang imbalance， with "chronic yin deficiency" being the core pathogenesis. The treatment emphasizes stage-specific interventions according to menstrual cycle phases or postmenopausal status，employing precise umbilical acupuncture point combinations complemented by emotional counseling to synergistically improve sleep. Guided by yin-yang theory and based on the "chronic yin deficiency" perspective，this paper systematically elaborates the staging treatment strategy for perimenopausal insomnia with umbilical acupuncture.