传播学中公共媒介的定义

public media

They broke the prior official monopoly of mass communications, and not only brought profound influence on the systematic construction of public spheres but also established a new mouthpiece - indoctrinating pattern for the whole society's opinion expression.

Meanwhile,smooth public media system plays an important role of safety valve in the stabilization and security of society.

Under conditions of market economy, a relatively perfect media ecosystem consists of three parts: official media, public media and commercial media, which function as political dissemination, social supervision and information service respectively.