At present, there are three kinds of mathematics books in secondary vocational schools in China. Combined with the current students' mathematical foundation, the textbook mainly introduces the basic mathematical knowledge such as set, function, exponential function and logarithmic function, trigonometric function at any angle, the image and properties of trigonometric function, straight line and conic curve in analytic geometry, and arranges and explains them according to the mathematical foundation and cognitive characteristics of students of this age, taking into account the universality of various majors, which can not only enable students to learn basic mathematical theory knowledge, but also solve problems encountered in real life with mathematics, and cultivate students' concept of lifelong learning, so that they can get it.