近年来，我国基层医疗卫生服务体系建设已进入医防融合纵深推进的新发展阶段。未分化疾病（MUD）受多系统、多因素交互影响，短期内难以明确诊断，病程常呈持续或反复发作状态，不仅严重影响患者身心健康，也造成了医疗资源的浪费。公共卫生服务作为基层医疗卫生机构开展MUD管理的基础性路径，亟需建立系统化、规范化的服务框架。为此，本共识由全科医学、公共卫生与预防医学、临床医学、健康管理学、卫生事业管理及社会学等多学科专家联合撰写，从医防融合理论出发，系统阐述了MUD公共卫生服务的服务对象与基本原则，明确了筛查、健康档案管理、随访评估、分类干预、双向转诊及结案管理等核心服务流程与内容，并就政策环境优化、多学科协同服务模式构建、人工智能技术应用等未来可能的研究方向进行了前瞻性展望。本共识旨在推动基层医疗卫生机构MUD公共卫生服务管理的标准化，为规范开展MUD公共卫生服务提供理论指导。

China's primary healthcare service system has recently entered a new developmental phase marked by the deepened integration of medical care and disease prevention. Medically Unspecified Disease (MUD), influenced by multiple systems and interacting factors, is difficult to diagnose definitively in the short term and often presents with persistent or recurrent episodes. This not only severely impacts patients’ physical and mental health but also leads to a significant waste of healthcare resources. As a fundamental pathway for MUD management delivered by primary healthcare institutions, a systematic and standardized framework for MUD public health services is urgently required. To address this end, this consensus was developed by a multidisciplinary expert panel comprising general practice, public health and preventive medicine, clinical medicine, health management, health policy and management, and sociology. Grounded in the theory of medical-preventive integration, this consensus systematically elaborates on the target population and basic principles of MUD public health services, defines the core service processes and contents—including screening, health records management, follow-up assessment, tiered intervention, two-way referral, and case closure—and provides forward-looking perspectives on potential future research directions, such as policy environment optimization, multidisciplinary collaborative service model development, and artificial intelligence applications. This consensus aims to advance the standardization of MUD public health service management in primary healthcare institutions and to provide theoretical foundation for the standardized implementation of MUD public health services.