From the perspective of user needs, this paper combines the entity elements and non-entity elements of services, develops methods and tools for integrated service design and provides service audiences with effective, feasible, efficient and user-oriented services to create service value and realize value sharing. Service design methods and tools (e.g., creating user files, personas and user flow charts) are applied for sorting out and analyzing service blueprints, discover service touchpoints and design them to meet the needs of users. Integrate service-design ideas to build a care virtual community and design strategy and practice of one-stop service "Heimer" APP. This not only can fully take into account the patient's cognitive impairment, abnormal behavioral activities, memory decline, social barriers and space-time barriers and other pathological problems for users, but also can accurately position service touch point in the service system to help service providers obtain design prototypes that target users are satisfied with objectively and effectively.