Abstract: Arbitrariness is the most important basic feature of language sign, which dominates the linguistics of the whole language. The arbitrariness of sign mainly refers to the arbitrariness of the connection between signifier and signified and the arbitrariness of the division and connection of signs in the language system. The arbitrariness of symbols determines the value of symbols in the system and determines that language is a pure value system. Nomenclature is one of the most common linguistic phenomena. The influence of symbol arbitrariness on nomenclature is mainly manifested in that the naming scope is more widely available, the naming process is simpler and more efficient, and the naming result is more varied.

Key words: language symbol, arbitrariness, value system, naming of coinage