Doctor system is a pioneering work and an important part of the political system in Qin Dynasty. It came into being to meet the actual political needs of the Qin Dynasty, and it continued to develop and evolve, which had a far-reaching impact on the politics of the Qin Dynasty and later generations [1]. According to "Han Shu Guan Bai Gong Qing Biao", "Doctor, Qin Guan." The palm connects the past and the present, and there are 600 stones and dozens of sticks. The word "doctor" appeared in the Warring States period, just a general term for scholars. But by the end of the Warring States period, in order to adapt to the increasing social situation of the United War, countries had to pay tribute to the virtuous corporal to ensure the safety of his rule. In this case, countries such as Qi and Wei set up doctoral officers, and let knowledgeable scholars serve as staff officers and consultants, making sure that their main task is to participate in political discussions and assist in decision-making. Therefore, The Continued Record of Hanshu said, "Doctor, I am responsible for teaching my disciples, and I have doubts about my country. I am responsible for asking the right questions. "The doctor system in the Qin Dynasty inherited the tradition of the Warring States, and its main function was to participate in the discussion meeting of national policies. Mr. Wang Jing' an pointed out earlier: "Dr. Qin also talks about ritual politics, which is the same as the Han system." [2] "Hanshu" said "Zhang Tong ancient and modern", that's what it means.