Exploration of the deep earth is indispensable to improve the ability of deep resources exploration and the level and rank of deep geological research of China. Deep scientific drilling is the only engineering method to accurately obtain the physical data from the deep earth. The core and key of deep scientific drilling technology is the drill string， and the size combination of drill string components and the selection of drill pipe joints determine the remaining strength of the drill pipe after balancing its own weight and the ability to cope with the complex situation in the hole； in particular， the performance of the drill pipe joint connecting each drill pipe directly determines the maximum drilling depth of the drill string. This paper reviews the high-performance drill pipe from the aspects of product types and joint structures， and analyzes the shortcomings and failure causes of existing drill pipe joints. The improvement plan is put forward for the drill pipe joint structure， which is of scientific significance and engineering value for improving the reliability， service life and safety of the drill string to make it better used in deep scientific drilling.