The iconicity is a concept that opposes the arbitrariness, and refers to the similarity between the form and the content of the language sign. Peirce divided signs into a ternary logic to establish a classical concept of the iconicity, and research on the iconicity has been increasing in number and attracting much attention from scholars since then. Especially in the field of cognitive linguistics, the iconicity is one of the main topics. In cognitive linguistics, the iconicity refers to the similarity between the form and content of language sign, whose type distinguishes between the mimic iconicity and the structural one. This study starts from Peirce’s semiotics and cognitive linguistics, sorts out the concepts and types of iconicity, and examines the conception of writing sign based on the similarities between the forms and the contents of the language sign. And the way in which the iconicity is expressed in signs, especially in Chinese characters is also examined. In addition, this study aims to present some examples of contents interacting with consumers that can be applied to communication, advertising, or marketing by utilizing the iconicity of character symbols and connecting it with interaction devices.