In this paper, based on data analysis,the development process of 60-year drilling workload, footage and drilling team was shown. The tremendous progresses of China's drilling technology, including directional well drilling, horizontal well drilling, underbalanced and gas drilling, deep well drilling, drilling equipment and well control technologies are described in detail. Drilling experience, scientific drilling, drilling optimization described the evolution developing process of China's drilling technology. According to the main demand of drilling technology in oil and gas exploration and development, it briefly discussed the key technologies trends.