The addresser delivers the political speech in order to expound his viewpoints and policies on the basis of the political situation home and abroad.The language of the speech has the functions of expressing affect, appealing and motivating feelings.The mode of the speech has both characteristics of oral and written discourse.According to the theory of Martin's appraisal system,the paper attempts to explore the appraisal resources and its function of expressing the addresser's position,viewpoint,and attitude.