Abstract: Chinese etiquette has always emphasized the harmony between people's clothing and their demeanor, and has always stressed both the distinctive and universal beauty, as reflected in old sayings, like "beautiful clothing attracts the eye, while elegant demeanor engages the mind", and "improper behavior leads to the violation of etiquette". Therefore, traditional clothing became an important carrier of feudal rites and rituals. In addition to serve as a significant clothing accessory in China's traditional feudal society, earrings, with a certain function of rules and regulations of etiquette, are also the crystallization of feudal ethics, reflecting the "decency" of traditional society. However, this type of function underwent tremendous changes in the period of the Republic of China. With the collapse of the traditional feudal etiquette and the emerge of the modern lifestyles, the mainstream style of jewelry started to present new features. The function of the earrings as a feudal etiquette gradually vanishing, and returned to the mass aesthetic appreciation of "body decoration". The pattern and function of earrings, as one of the typical types of jewelry, also underwent various changes. In this study, fashionable earrings for women in the period of the Republic of China (1912-1949) are taken as the research object to analyze the essential characteristics and causes for the changes in their patterns.