The China National Key Research and Development Program of China “The experiment of a multi-platform collaborative field campaign on offshore typhoon (2018YFC1506400)” was established to meet the needs of the country for typhoon prevention and disaster reduction. Additionally, the project aims to solve the lack of direct typhoon observation data, which restricts the development of typhoon science and the improvement of operational forecasting ability in China. Since the establishment of the project in December 2018, field observation-diagnosis and theoretical analysis based on observational data-numerical simulation and data verification have been used to adapt and transform new typhoon detection equipment independently developed by China in recent years. This included high-altitude unmanned aerial vehicles and stratospheric airships and the complete design of the “land-ocean-air-sky” three-dimensional collaborative observation scheme for offshore typhoons. Furthermore, multi-platform collaborative field observation experiments were implemented for 16 offshore target typhoons and the parameterization scheme of the physical process of the typhoon model based on the analysis of multi-source direct observation data was modified and applied to the national-level typhoon operational numerical prediction model. This significantly improved the performance and forecast accuracy of the track and intensity of the typhoon operational numerical prediction model and precipitation forecast by 5% and 3%~5%, respectively. Here, the progress of the program is summarized and associated scientific issues are discussed. The typhoon multi-platform observation system and collaborative observation scheme constructed by the project will lay the foundation for the construction of operational direct typhoon observation in offshore areas of China and is expected to realize the progress from the current “follow-up” to “parallel” and partial “lead.”