In Chinese law, the issue of whether a trademark's function of ensuring the quality of goods and services should be considered a separate trademark function remains controversial. This function is not legally enshrined in China, but its violation is recognized in judicial practice as an independent basis for legal protection. The need to consider the quality assurance function of a trademark as a separate function is supported by judicial practice, criteria for determining the quality of goods developed in Chinese law, and legislatively established requirements for product quality.