中青年群体极低的签约率已成为全面推进家庭医生签约服务的重要障碍，课题组前期研究发现造成该障碍的症结有二：一是签约服务对需求侧吸引力不足；二是收支两条线机制下的供给侧驱动力不足。如何针对中青年人群构建动力强劲的家庭医生楼宇服务模式成为突破基层卫生改革的关键点。本研究以典型大都市上海为试验田，从研制有价值的签约服务包入手，通过供需双方的评估调查、借助SEM模型识别吸引力与驱动力因子，在此基础上利用SDGM从多维行动者视角还原“真实”系统（Mapping）、构建供-需双向驱动的家庭医生楼宇服务动力模型（Modeling）、并进行数据拟合与稳健性检验（Simulation）。建模完成后，选择上海三家试点合作单位，进行模型的应用性跟踪评估、实现模型完善优化。本研究通过“研发-应用-评估-反馈”研究闭环的产出为全科进楼宇提供服务标准与评估标准，为国家与地方基层卫生服务改革提供决策依据。

The extremely low signing rate for young and middle-aged people has become a dominant obstacle to comprehensively promote family doctor contracted services. Based on the previous studies, our research team found that the obstacle was caused by two aspects: one was that the contracted services was not attractive to the supply side; the other was that, for the supply side, the driving force under the budgetary control system was insufficient. How to build a strong family doctor workplace contracted service pattern for young and middle-aged people has become a key point to break through the grassroots health reform. The typical metropolis city Shanghai was selected as the experimental pilot in this program, which plans to initiate with the development of a valuable contracted service package, to identify the attractiveness and driving factors through SEM based on the evaluation survey of supply and demand sides, to restore the “true system” through SDGM (Mapping), to build a supply-demand bidirectional drive model (Modeling), and to perform data fitting and robustness test (Simulation). After the completion of model construction, our research group will select three pilot cooperation units in Shanghai where we will conduct the tracking evaluation of our model. Depending on "Research-Application-Assessment-Feedback" research closed-loop output, this program aims to provide service and evaluation standards for FD workplace contracted services, and to provide decision-making basis for national and local grassroots health service reform.