China is a unitary country. According to the Constitution, China implements a unified legislative system, i.e. there is only one legislative system of multiple levels in the country. The Constitution stipulates that the National People's Congress and its Standing Committee exercise legislative power of the State to enact laws; the State Council formulates administrative regulations according to the Constitution and laws; the people's congress and its standing committee of each province, autonomous region or municipality directly under the Central Government formulate local regulations, which must not contravene the Constitution, laws or administrative regulations; the people's congress of each national autonomous area has the power to enact regulations on the exercise of autonomy and separate regulations in the light of the political, economic and cultural characteristics of the nationality or nationalities in the area concerned; departments of, and agencies with administrative functions directly under, the State Council formulate rules according to the laws and administrative regulations of the State Council; and the people's government of each province, autonomous region or municipality directly under the Central Government, as well as the people's government of the city where the people's government of a province or autonomous region is located, of the city where a special economic zone is located and of larger cities designated by the State Council may formulate rules according to the laws, administrative regulations and local regulations of their respective province, autonomous region or municipality directly under the Central Government. As to a special administrative region, according to the principle of "one country, two systems" and the provisions of Article 31 of the Constitution, the system (including legislative system) in a special administrative region shall be stipulated by law enacted by the National People's Congress.
The sources of Chinese law include the Constitution, laws, administrative regulations, local regulations, regulations of national autonomous areas, regulations of special economic zones, rules, basic laws of special administrative regions, international treaties and practices.