Abstract: This paper studies application and distribution of appraisal resources in political addresses from the perspective of the Appraisal Theory with “I Have A Dream” as a case. Results show that attitude, graduation, and engagement resources being abundant in this master political address, attitude resources operate as a circle, graduation resources with preference to force overlap with engagement resources, which mainly make the theme prominent and the address persuasive. This paper, by demonstrating the unique charm of “I Have A Dream”, also verifies the feasibility and practicability of the Appraisal Theory in analyzing political addresses.