After the anti-Qin war, there were still four years when Chu and Han struggled to cut off the king with a different surname. Liu Bang, Emperor Gaozu of Han Dynasty, founded the Western Han Dynasty. In the early years of the Western Han Dynasty, the economy was ruined and the society was just stable. It is necessary to establish and formulate some systems and policies to restore the economy and consolidate the political power. Therefore, in the early Western Han Dynasty, "the learning of Huang Lao" was used to rule the dynasty to avoid repeating the same mistakes. And adopt the corresponding "rest" policy. The so-called "Huang Lao" is the Yellow Emperor and Lao Zi. "Learning from Huang Lao" means governing the country with the thoughts of Huangdi and Laozi. "Recuperate" originated from "governing by doing nothing" in Laozi's thought, which means "governing by doing nothing" (not referring to inaction or inaction here, but referring to not acting rashly, conforming to objective conditions and respecting natural laws. The policy of "rest and recuperation" includes "paying taxes lightly" and "lenient punishment but cautious punishment", that is to say, reducing corvee, reducing taxes and handling punishment carefully. During the 70-odd years from the establishment of the Western Han Dynasty to Emperor Wu of Han Dynasty, the economy recovered and the society was relatively stable, which laid a solid economic foundation for "conquering princes" and "loving Hungary" after Emperor Wu of Han Dynasty. However, with the progress of society, this kind of economic policy is no longer suitable for the social status quo of Emperor Wu of Han Dynasty. Therefore, the reform of Emperor Wu of the Han Dynasty is the economic foundation suitable for the superstructure. Facts have proved that the policy of "rest and recuperation" conforms to the social situation of the Western Han Dynasty and has played a great role in consolidating a newly established political power. This also made the dynasties after the Western Han Dynasty follow suit and consolidated the dynasty.