Xi Jinping Thought on the Rule of Law contains a series of important expositions on the constitution, which profoundly explain the core meaning of Chinese constitution, enrich and develop the theory and practice of the socialist constitution with Chinese characteristics, and mark that the Party's understanding and practice of the constitution has reached a new height. To study and analyze the theoretical characteristics and practical orientations of the constitution in Xi Jinping Thought on the Rule of Law will not only help to learn and understand the profound connotation of Xi Jinping Thought on the Rule of Law from the perspective of the constitution, but also help to provide guidelines for action in the theory and practice of governing the country according to the constitution in the new era. The organic unity of upholding the leadership of the Party, the people being the masters of the country, and governing the country according to the rule of law has always held an important position in China's political and legal discourse system. It runs through General Secretary Xi Jinping's systematic exposition on the constitution. It is a key clue to understand the political connotation, the people's attribute and practical orientation of Chinese constitution. Among them, upholding the leadership of the Party is the primary political connotation of China's constitution. Chinese constitution thus bears an important political mission. It is the fundamental rule of law guarantee for consolidating and safeguarding the Party's leadership, improving the Party's governing ability and leadership, ensuring that the Chinese people, under the leadership of the CPC, always march forward courageously along the path of socialism with Chinese characteristics, and comprehensively promote the building of a strong country and the great cause of national rejuvenation with Chinese path to modernization. The people being the masters of the country highlights the people's attribute of China's constitution. China's constitution is the people's constitution. The core content of the constitution embodies the people-centered value concept. Fairness and justice are the noble pursuit of the implementation of the constitution, and the fundamental interests of the people are the ultimate destination of the implementation of the constitution. Only by firmly relying on the Chinese people under the leadership of the Party can the constitution always maintain vitality and vigor. The practical orientation of the strategic layout of comprehensive implementation of the constitution focuses on the effective realization of the organic unity of upholding the leadership of the Party, the people being the masters of the country, and governing the country according to the rule of law. Upholding the leadership of the Party is the fundamental guarantee for the full implementation of the constitution; The people being the masters of the country is the foundation for the full implementation of the constitution; Governing the country according to the rule of law not only is the inevitable requirement for the full implementation of the constitution, but also provides a solid legal foundation for the full implementation of the constitution. It is the adherence to and realization of the organic unity of upholding the leadership of the Party, the people being the masters of the country, and governing the country according to the rule of law that ensures that the full implementation of the constitution is not an empty declaration, but has a specific practical path and solid implementation foundation. The political connotation carried and the fundamental interests of the people protected by the constitution thus can be effectively implemented. General Secretary Xi Jinping's systematic interpretation of the constitution has formed a scientific and complete theoretical system and discourse system about the Chinese Constitution, which is completely different from the Western constitutional discourse model. This provides scientific guidance for us to better understand China's constitution, and also sets a correct model for the theoretical research of China's constitutional law. China's constitutional law should be rooted in the history and practice of China's constitution. Focusing on China's real and vivid political and legal practice is the key to understand the real situation of China's constitution, promote the implementation of China's constitution, and establish the discipline system, academic system and discourse system of China's constitutional law.