This process can be divided into three stages: natural justice period; legal justice period and constitutional justice period.

On theoretical system of equal employment right by taking the connotation of constitution as thinking dimension;

Textual Research on the Scattered Works of The Ancient Meaning of Constitution by Tang Shouqian;

The Formation and Realization of Citizens Constitutional Obligation Norms;

As obligations abhorrence based on traditional Chinese society,the obligation research,specially constitutional obligation,is regarded as "surrender" or "outdated thought".

The judicial appliance of constitution has a guide:the first is indirect appliance of constitution;the second is interpretation of constitutionality to be a constitutional obligation.

The origin of country,the theory of human nature,a harmonious society,liberal thought and so on constitute the theoretical basis of constitutional obligations.

Provisos of the constitutional rights clauses provides limitations on constitutional rights,while constitutional obligations are the obligations to the State set up by the constitution-makers (the People) for themselves.