The traditional approach to criticism research often focuses on the compilation of critical history and the logical construction of critical theory. However, “criticism of criticism,” also known as “meta-criticism,” strives to treat criticism as an independent discipline and conduct fundamental research on it. This involves exploring the types of criticism, methods of criticism, subjects of criticism, the inherent forms of criticism, as well as its shaping within the context of social history, culture, and ideology. This lecture will begin with a traditional approach to criticism research, elucidating the significant value of “criticism of criticism” as a methodology for criticism research. It will enumerate its problem perspectives and, in conjunction with Chinese art criticism in the 20th century, briefly outline the application of “criticism of criticism” in specific research.