To redefine the functions of the "Political Work Department of the Central Military Commission" is to fulfill the construction, organization, political education and military human resources management of the Communist Party. The original function of army supervision was weakened, which was reflected in establishing "Committee of Discipline Investigation" and "Politics and Law Commission" from Commission for Discipline Inspection and Political Legal Affairs Committee of the Communist Party of China (CPC). Three of them respectively became one of the fifteen functional departments of the Military Commission, and there was a parallel relationship among them. In 2018, most units directly under the Political Work Department were renamed and their connotations and functions deserve our attention. In addition, the executive and subordinate unit of "Three Warfares" has been changed. The liaison bureau of the Political Work Department of the Central Military Commission and the Political Work Department of the Strategic Support Force will respectively play the role of guidance and execution in "Psychological Warfare", which can become the important platform of "Media Warfare" and "Legal Warfare". The future development and impact has entered a far-reaching realm and should not be underestimated.