Abstract: To achieve the goal of 25% of students achieving excellent physical fitness standards as stipulated in the Outline of Healthy China 2030 Plan, it is necessary to build a method with precise measurement, analysis and intervention, and then put it into practice. Based on a balanced measurement system with sports-related and health-related index, the precise measurement should be conducted by the third-party, under the administrative leadership. And, the precise analysis needs to reflect detailedness, regularity, correlation, focus, pre-warning and publicity, with a focus on grassroots schools. While the group analysis starts with different gender groups at the school, grade and class levels, and focuses on the boundary population of the "zone of proximal development", the individual analysis uses data visualization to discover problems, and focuses on the "shortest index" and "second shortest index". The platform built on new technologies can conveniently achieve precise analysis. Precise intervention should not only focus on schools, but also expand the off-campus site of home-school-community co-education to help students form the habit of physical exercise. By promoting the consensus of stakeholders, enhancing knowledge, physical fitness and skill reserves, optimizing the soft and hard environment, an information platform is built for communication between schools, families and communities to strive its normalized operation, which will promote the integration of school sports with the improvement of students' physical fitness.