This paper introduces and systematically explores the novel concept of "Extended Language," aiming to expand the boundaries of traditional linguistics and semiotics. Extended Language is not confined to conventional linguistic symbol systems (such as text, speech, images, etc.), but also encompasses all signals received through the senses (such as vision, hearing, touch, etc.), which form subjective experiences after being processed by the brain. Extended Language can be seen as a "translation" medium between us and the real world, where individuals receive physical signals from the external environment through sensory systems and transform them into meaningful experiences through the symbolic processing of the brain. Extended Language can also be viewed as the "construction" of the world, meaning that we actively construct our understanding and experience of the world through perception and symbolic systems, rather than passively reflecting the reality of the external world. Extended Language includes but is not limited to perception, emotion, memory, and cultural symbols, and it has the ability to transcend individual and even spatiotemporal limitations. Through this expansion, Extended Language is defined as a global information representation system that transcends individual subjective experiences, covering a broad range of perception and symbolization.