Abstract: Flower language is words or the meaning expressed by organs and species of plant, and plant environment. There are seven origin ways of flower language, which are appearance, habits and characteristics, functions, name, mythology and legend, special events, and customs. The characteristics of flower language are mainly embodied in five aspects: richness and diversity, extensiveness and concreteness, universality and difference, polysemy and synonyms, timeliness and development. The value of flower language is directly or indirectly reflected in five aspects, i.e. social value, aesthetic value, economic value, cultural value and academic value. Flower language is of great significance in production and life.