Application problems play an important role in the whole primary school mathematics teaching, and students' ability to solve application problems directly determines the quality of primary school mathematics teaching. Therefore, the application problem teaching has always been the focus and difficulty of primary school mathematics teaching. So, how can we cultivate students' ability to solve application problems? First, exam training is a question of understanding the meaning of the topic, the known conditions and requirements. Careful examination of questions is an important prerequisite for students to solve problems correctly, but it is easy to be ignored and lead to mistakes. According to the characteristics of application problems, it is the key to correctly solve problems to quickly and accurately determine the thinking direction and deeply understand the quantitative relationship. In teaching, teachers should emphasize the careful examination of topics and teach students the methods of examination. The description of the application problem is a whole. It includes three elements: plot, conditions and problems. When reviewing the questions, we must gradually understand the meaning of the questions from the whole to the part, and ask the students to review the questions themselves and find out the conditions and problems in the application questions. Think carefully and grasp the key words when reading the questions, especially. On the basis of understanding the stem of reading, we should carefully examine the meaning of the question and determine the thinking direction and method of solving the problem. Finally, through careful reading, we can solve the formula. See if it fits the meaning of the question. Strengthening examination training is an effective way to improve the correct rate of solving problems. Second, line drawing training aims at the characteristics of primary school students' strong concrete thinking ability and weak abstract thinking ability, guiding them to vividly reveal the quantitative relationship in the problem, understand the meaning of the problem, and find out the solution with the help of line segments. For slightly complicated application problems, concrete and intuitive line drawings are effective ways to help students understand the meaning of the problems. Third, the training of multiple solutions to one problem inspires and guides students to analyze and solve application problems from different angles, different ideas and different calculation processes. In this way, students can not only consolidate their knowledge, but also expand their thinking methods, enhance their flexibility and originality, and develop their intellectual potential. The training, analysis and synthesis of self-made application problems are two commonly used methods in the teaching of application problems in primary schools, and they are the focus of application problems teaching. The effective way to cultivate students' ability to analyze or comprehensively solve problems is to supplement problems and conditions and train self-made applications. Supplementary questions and conditions and self-made application problems enable students to master the structure and quantitative relationship of application problems from different angles, thus improving their analytical and comprehensive ability.