Traditional Chinese Medicine (TCM) is an excellent representative of Chinese civilization, and drug instructions, as a key part of popularizing and promoting medicine, play an important role in the dissemination of TCM. TCM has also made a unique contribution to the global fight against the virus during the ongoing pandemic. Drug instruction is a kind of legal document carrying drug information, and is a special scientific discourse. However, the current research on drug instructions mainly

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... ses on English translation, and few scholars have conducted in-depth analysis on it from the perspective of functional linguistics. Therefore, this research analyzes the language features of instruction of Lianhua Qingwen capsule with the aid of Meta-function theory. These features reflect that TCM instruction has the experiential function to explain, promote products and spread Traditional Chinese Medicine knowledge, the interpersonal function to guide consumption, maintain brand image and establish harmonious interpersonal relationships with the target readers, and textual function to make the discourse coherent and complete. The study also proves the practicality and applicability of meta-function theory.