Modern linguistics has developed in close connection with the philosophy of language. The emergence of evolutionary linguistics not only challenges the static orientation  of traditional linguistic research but also opens up  a new direction for research on the philosophy of language. Evolutionary linguistics emerged against the backdrop of modern linguistic science, and its fundamental ideas are primarily derived from  the natural sciences. Yet, when evolutionary methods are applied to the origin and development of human language, evolutionary theory itself still faces many unresolved challenges. Language evolution is not a simple biological evolutionary process, nor can its complex process of linguistic evolution  be adequately explained through a purely scientific mode of thought; other explanatory approaches must be employed simultaneously. Modern philosophy of language, with its central concern for how language represents the world, offers particularly profound insights into the evolution of human language. From a philosophical perspective, the archaeological examination of the transition  from signal to symbol represents a significant achievement of evolutionary linguistics and provides crucial scientific grounds for philosophers to advance their study of language toward abstraction and logical analysis.  The transition from signal to symbol is not only a decisive  turning point in the evolution of human language but also a great revolution in humanity’s way of understanding the world.