The contemporary government system of Belgium is established based on the spirits of the constitutionalism. The rights and duties of each government section are clear. Through the political participation mechanism of political party, interests groups and elections, the idea of citizen's sovereignty acquires its implementation. The constitutional guarantee of human rights and the principle of the rule of law are actual portrayal of contemporary political life in Belgium. Although a complicated design of government system and confusion of national identity, recognition and respect of the rights to self-development can be seen vividly in the cotemporary constitutional system of Belgium.