It is still not easy to accurately grasp the evaluation of children's mathematics learning. Because the child has not studied mathematics comprehensively. There is no complete mathematical foundation, and there is no habit and ability to master mathematical thinking. So when we evaluate children's ability to learn mathematics. It is necessary to teach children how to learn mathematics and guide them to learn to think. On this basis, it analyzes children's understanding and acceptance ability, thus representing children's ability to learn mathematics. Therefore, never judge a child's learning ability by whether a question is answered correctly or not. In the process of guiding and cultivating students' ability, we should understand the situation of children's mastery and acceptance.