Building an independent knowledge system of trade union studies is not only a practical requirement for extracting and crystallizing the creative practices of China's trade unions and promoting its high-quality development, but also a theoretical demand for contributing the "Chinese Theory" based on practices of China's trade unions to the global knowledge system. Strengthening the construction of disciplines is an important lever and effective carrier for constructing an independent knowledge system in China. The discipline of trade union studies has a foundation, history, support, and basis for support. As different prerequisites progressively mature, it is time to construct an independent knowledge system of trade union studies based on the opportunity of promoting the construction of the first-level discipline of trade union studies in the new era. Trade union studies is both a theoretical and practical discipline, whilst its basic orientation is to maintain an organic combination of theory and practice, adhere to problem-oriented research to clarify the growth boundaries of the discipline, adhere to the Chinese logic of trade union studies, and extract original conceptual categories based on the development and localization of China’s trade unions.