The History of Three Kingdoms and The Romance of Three Kingdoms contain a lot of theoretical materials on the legitimacy of ruling in ancient China,including the Traditional Type and Fascination Type.

Taking the cooperative medical-care system as an example,the ruling party and government tend to maintain political stability and broaden legitimacy foundation by means of establishing social welfare system and rebuilding public goods supplying system.

It has no clear ideology but with a government programme for national independence and economic development, and has experienced a process from legitimacy to crisis.

From the perspective of the term“legitimacy”defined in political science,this p aper holds that,among all other politica l legitimacy sources,governing ach ievements and relatively in-dependent ideologies play an very im portant role.

Under economic apparent threshold political legitimacy;

Analysis of Political Legitimacy from the Perspective of Ideology;

The Research about Mao Zedong's Views on Political Development from the Political Legitimacy;

This paper makes an analysis of the theory of "constructing ecological civilization"presented in the 17th CPC National Congress from the following four perspectives of human civilization evolution,the development of Marxism,political validity and transformation of modernization mode.

Each study represents an explaining pattern of political validity.

The political validity is the valid condition that the party govern,The right achievement view is an important assurance that enhance political validity.