The article examines cultural standards of modesty in the Russian and Chinese languages. The study is based on dictionaries and text corpora of two languages. The purpose of the work is to determine universal and nationally specific features in the formation of cultural standards of modesty in the Russian and Chinese languages. The object of the study is modesty as a traditional value of Russian and Chinese linguistic cultures. Modesty is encoded using cultural standards that reflect the essential features of modesty as a sociocultural value that characterizes Russian and Chinese cultures. The study found that in the Russian language, modesty, which is predominantly gender-based, is mainly associated with the image of a girl (woman). Modesty as a universal human quality is realized contradictorily: 1) “the modesty of a hero, a real person” and 2) “the modesty of a quiet, timid, dependent person.” In Chinese linguistic culture, “modesty” occupies a strong position, and its “standard” implementation, determined by the ideas of Confucius, is an integral part not only of etiquette, but also the worldview of the Chinese. In the Chinese language, the “standard” implementation of modesty, defined by the ideas of Confucius, is an integral part of etiquette. The Chinese modesty system is associated with natural objects and plant images that are of great importance to Chinese culture. The results of this study can be used in lexicographic practice and in teaching Russian and Chinese languages.