This article briefly analyzes Science as a Vocation and Politics as a Vocation,considers that Weber attempts to use two strategies on science and politics.Academically,Weber insists on the scientific spirit and valuefree;in politics,Weber advocats value judgement.In dealing with different aspects of the vocation,Weber hopes to put ethics of conviction and ethics of responsibility together.Liang qi-chao's JingYe and LeYe is in response to Weber's view.