The 1988 Constitution marked the formal establishment of Brazilian democracy. According to the Constitution，the Federal Republic of Brazil is a democratic country ruled by law. All powers are exercised by the people，who elect representatives or exercise their powers directly. Since the restoration of democracy in Brazil in 1985，Brazil has gone through the stages of semi-democracy，non-liberal democracy and free democracy. There are two main characteristics of the evolution of democracy in Brazil during this historical period：one is that the Constitution and law have established a relatively perfect system of rights and specific systems of democracy；the other is to explore innovative ways to achieve democracy. By exploring the evolution and development of Brazilian democracy，we can grasp the process and development of Brazilian democracy as a whole.