The book is divided into three chapters. Chapter I: Press Review: opinion dissemination begins to change from here; Chapter II: Broadcasting Theories: restore the basic state of opinions dissemination; Chapter III: Internet Age: interactive and open opinion dissemination. With an objective attitude, the author introduces the changes of public opinion environment in the past 35 years of reform and opening-up and the positive energy of these changes from the perspective of opinion dissemination. This book introduces the progress and development of China in this regard from a professional angle, but easy for foreign readers to understand. It is detailed in information, comprehensive in content, and academic in forms.