Abstract: A series of important speeches by Xi Jinping on the cause of national health are an important part of Xi Jinping's socialist thought with Chinese characteristics in the new era.Xi Jinping's important exposition on the cause of national health is based on the understanding of health and social development law. He also proposes a series of original, epochal, practical and theoretical new concepts and ideas for the future of human society in a healthy age, the comprehensive development of health and human beings, the healthy governance of China, and for the construction of a global health governance system.All of these become the latest achievements in theoretical innovation of Marxism in the new era.Guided by the new concepts, it is of far-reaching significance to earnestly study and deeply understand the background of the times formed by Xi Jinping's important exposition on socialism with Chinese characteristics for a new era and the cause of national health for the realization of the "two centenary goals" and the Chinese dream of the great rejuvenation of the Chinese nation.