This article specifically analyzes the negative impact exerted by angry youth and spoofers on the construction of a harmonious society from four aspects: the way these intensify social contradictions, affect the social mentality, undermine mainstream values, and interfere with freedom of speech. It purports that importance must be attached to the interests and demands of young people during the construction of a harmonious socialist society and, on this basis, explores responses and approaches for strengthening and improving ideological and political education for young people and promoting the construction of a harmonious society.