Abstract: Deep-sea scientific drilling is the key approach to investigate the earth's interior. Ocean Drilling Project (ODP) has promoted the settlement of critical technical problems, and achieved the breakthrough of engineering technology and energy resources. The engineering technology research of deep-sea scientific drilling is of great significance for the exploration and exploitation progress of marine energy resources, and for the promotion of earth sciences and marine sciences of China. The engineering technology achievements of international deep-sea scientific drilling were summarized in this paper, and the achievements of deep-sea drilling technology and engineering support project by China Geological Survey were sorted. The research results show that comprehensive research of deep-sea scientific drilling technology were carried out, and a series of deep-sea drilling underwater engineering technology and equipment were developed. The drilling coring technology system was improved, and the drilling accident prevention and treatment technology was obtained. Besides, pre-research on key technologies for deep-sea ultra-deep well drilling was initiated, and a number of innovative research results and progress were obtained. These achievements have strongly supported the establishment of China's deep-sea drilling engineering technology system, and provided strong technical and equipment support for promoting earth system scientific research, which could provide references and guidance for deep-sea scientific drilling technology in China.