In order to solve the problems of orbital system, the development of domestic and foreign orbital servicing technology is researched. The development background and significance of orbital servicing technology are introduced, and the status quo of manual and automatic orbital servicing are analyzed. The result indicates that orbital servicing technology could extend the life of spacecraft and enhance their performance. The automatic orbital servicing based on OSV becomes the inevitable option for the low cost and high reliability of space maintenance technology, and it will develop in the direction of intelligent and autonomous.