Abstract: The brilliant achievements of Chinese modernization, the decline of western mainstream values and the changes of media pattern and public opinion ecology caused by the development of intelligent media have provided solid support, historical opportunity and technical support for strengthening the external communication of socialist core values. However, the insufficient efficiency of external communication, the stigmatization of western discourse on China, and the cultural background differences of different countries also make the external communication of socialist core values face challenges. Therefore, it is necessary to highlight human consciousness, humanistic consciousness and emotional consciousness, and take the common value of all mankind as the keynote of external communication value; we should highlight the national characteristics, value orientation and implementation path of Chinese-style modernization, and take Chinese-style modernization as the main tone of external communication content; it is necessary to highlight the emotional power, active power and popular power of external discourse, and to shape the realization of external discourse into self-shaping as the tone of external communication discourse, strengthen the external communication of socialist core values and enhance the communication power, attraction, influence and competitiveness of Chinese culture.