In logic, things are opposite, two-way consideration question, be helpful for thinking of the strict and rationality. While the math on the requirements more stringent strict and rationality. Mathematics reflection ability in mathematics reflection is show activity process a stable personality. Analyzing the basic mathematical reflection ability definition, characteristics, development characteristics and the relationship with other mathematical ability is accurately grasp the essence of mathematics reflection ability, is to improve students' mathematical reflection ability important guarantee to improve teaching efficiency, mathematics curriculum reform, promote also has important realistic significance. Reverse thinking helps to close our mathematical thinking, helps improve mathematical and scientific development. Reverse thinking to the person's thinking ability, especially the logic and the cultivation of thinking ability, training and development has great, irreplaceable role. Therefore, in the later teaching should take the initiative to cultivate students' reverse thinking. Reverse thinking is a kind of creative thinking, it is necessary KaiTaXing talents thought quality, good at reverse thinking is a sign of thinking agile. Thinking direction, carrying designated exploration, reverse thinking is retrorse thinking characteristics. The correct reverse thinking, will the essential attribute of master of problems more clearly, still can form the habit of thinking for problem. Two-way In mathematics competition, the importance of reverse thinking, particularly prominent counter-evidence method, analysis the basic methods are important. In addition, the tectonic counterexample, pour extrapolation and elimination method also are all derived from the reverse thinking. Reverse thinking broke the previous immobilized thinking mode, for innovation, creative thinking lay the foundation. Encourage students to use reverse thinking, helps cultivate students' logical thinking ability, help mathematical science development and improvement.Keywords: logic reverse thinking ability of thinking characteristics