Abstract: From the theoretical perspective of the overall evolution of western metaphysics,the word “reality” has a core value.The specific forms of contemporary realism and anti-realism are generated by the different forms of ontology in the philosophical tradition,through the transition of epistemology,and finally turn to language.This provides key support for the clarity of the development of western metaphysics.Realism,which represents the specific forms of different philosophical development stages,will inevitably lead to corresponding anti-realism.This way of forming the metaphysical theme of each stage should be regarded as the philosophical paradigm of “reality—anti-reality”.Under this unique perspective,the overall development of western metaphysics presents the evolution of their specific theoretical forms.The debate between Davidson and Dummett on realism and anti-realism is a new product of the post-linguistic turn of western philosophy based on the theoretical origin and the new development of modern logic and contemporary meaning theory.After Frege and Wittgenstein,Davidson and Dummett started the debate on the issue of reality based on meaning and truth,which determined the common theoretical bottom line adhered to all kinds of realism views of different degrees and forms.The critical point of this theory and the focus of controversy is whether to adhere to the two-value principle.

Key words: realism, anti realism, metaphysics, two-value principle