In the judicial practice of China, the constitutive requirements of justifiable defense have always been interpreted in the direction of denying its claim, which makes it nearly impossible to raise such a defense for the defendant successfully. There is an unbridgeable gap between the legislative provision of justifiable defense and its judicial application. The alienation of justifiable defense in the judicial practice derives not from the poor construction of its dogmatic theory, but mainly from a mistaken self-orientation of conflict resolution for the judicial adjudication in its function. Through the invalidity problem of the statutory provision of justifiable defense in China, we need to consider seriously a shift of the judicial adjudication in its basic function from conflict resolution to evaluating its lawfulness for a conduct. On this basis, the primary function of criminal law system should be redefined correspondingly. In a risk society of high indeterminacy, the primary function of criminal law system lies in making the normative expectation stable among the people. In view of this, it is especially necessary to rethink and reconstruct the dogmatic theory of criminal law on the whole, and to manage to finish the shift of its theoretical framework.