The improvement of poverty exit mechanism may help reconstruct poverty alleviation and development business process, improve living capacity of poverty alleviation subjects and optimize poverty alleviation governance. The paper comprehensively studies the operation characteristics of poverty exit mechanism, such as focusing on poverty alleviation and development system to improve the efficiency of poverty alleviation resources, highlighting the diversity of the main subjetcs involved in poverty alleviation and the creation of governance mechanisms and emphasizing the use of modern information technology and new management model innovation in poverty exit mechanism. Then it analyzes the practical difficulties in poverty exit as follows: The standard of poverty exit is rigid and fails to measure in a scientific way; The understanding divergence makes the idea of “procedure legitimacy is reasonable” be available; The positive incentives in poverty alleviation is ineffective. Finally, it makes the following suggestions: taking strict targeted measures in poverty alleviation, improving index system of poverty exit, focusing on strict exit procedures of poor household and poor villages, paying attention to the appraisal of poverty exit work, enhancing publicity education on poverty exit, combing spiritual poverty alleviation with material poverty alleviation, relating positive stimulation with negative stimulation, providing support guarantee for poverty exit work, innovating support polity and developing sustainable ability of the living of the subjects.