National justice and social justice are the legitimacy signals of the criminal investigation system. The national justice requires the rights of equality and freedom should be guaranteed in the procedure of criminal investigation, which achieved through procedural justice confirmed by legislative, the institutional judicial independence, and cultural ideas being full of good ethical ideology. The social justice is the social principle of equivalent protection of community interests and individual interests in a survey of the facts of crimes. The material concept of the social justice has been constituted with individual rights and human rights.