Conventional 2D and 3D seismic detection methods for oil and gas exploration do not provide the resolution required for high- precision hydrate exploration and detailed ore body descriptions. To address this limitation, a set of high- precision small 3D seismic acquisition systems, along with a matching small 3D seismic observation system and construction technology method, was developed. Through multiple sea tests and continuous refinement, a set of small 3D seismic acquisition technologies for natural gas hydrates was established. This technology meets the high- precision and high- resolution imaging requirements for shallow hydrate ore bodies in deep water. A successful 50 km 2 3D seismic acquisition operation was completed in the production area, demonstrating the technologys high data quality and enhanced spatial sampling rate. Compared to conventional 3D seismic data, the superimposed sections exhibit significantly improved horizontal and vertical resolution, enabling a better description of the details of shallow strata at 300 m and providing excellent imaging clarity. The successful development of this technology represents a significant breakthrough, freeing China from dependence on foreign technologies and equipment for natural gas hydrate exploration and development. This advancement provides crucial technical support for high- resolution exploration and production of natural gas hydrate resources in China.