[Purpose] Targeting women of reproductive age in a digital context, a context-aware User-Task-Environment model is established to translate stage-specific needs across contraception, preconception, and pregnancy into actionable product elements and service workflows.[Method] Using questionnaires and interviews, demand clustering and function mapping are conducted, leading to a modular, multi-form smart-jewelry solution that integrates physiological sensing functional (body temperature, heart rate, blood oxygen) with layered interactions to form a closed loop of “collection-analysis-personalized feedback.”[Result] The needs analysis identifies cycle management, pregnancy monitoring, general health tracking, and social connection as high-frequency application scenarios.[Conclusion] The context-driven integrated framework combines modular form factors, layered monitoring, and context-triggered services to enhance multi-scenario adaptability and personalized responsiveness, providing a feasible path toward personalized and fine-grained design for women’s health wearable.