The Sociology of Scientific Knowledge and Kuhn's philosophy is in direct line of succession in history. The Sociology of Scientific Knowledge inherits the thought of relativism from Kuhn's philosophy and develops it thoroughly. The Sociology of Scientific Knowledge takes relativism as the basis of epistemology and explains many anomalies that couldn't be explained in Merton's tradition. What's more, the Sociology of Scientific Knowledge reveals the relativity of scientific knowledge and uncover the mysterious veil of science. But the Sociology of Scientific Knowledge is unable to overcome the theoretical contradiction of relativism. Besides, the theory of the Sociology of Scientific Knowledge is superficial because its research is limited to the field of experience.