According to "Mathematics Curriculum Standard for Ordinary Senior High Schools" (experiment), how can mathematics teachers pay attention to the cultural value of mathematics in teaching and promote the formation of students' scientific outlook? Mathematics is an important part of human culture, the product of human social progress and the driving force to promote social development. In teaching, we should guide students to have a preliminary understanding of the interaction between mathematical science and the development of human society, understand the scientific value, application value and humanistic value of mathematics, broaden their horizons, explore the historical track of mathematical development, improve their cultural literacy, form the habit of rational thinking such as seeking truth, reasoning, criticizing and questioning, and persistently pursue the truth. In teaching, some historical events and figures that play an important role in the development of mathematics should be introduced to reflect the role of mathematics in the progress of human society and the construction of human civilization, and also to reflect the role of social development in promoting the development of mathematics. For example, in geometry teaching, teachers can introduce to students the great influence of Euclid's thinking method of establishing axiomatic system on human rational thinking, mathematical development, scientific development and social progress; In the teaching of Analytic Geometry and Calculus, students can be introduced to Analytic Geometry founded by Descartes, Calculus founded by Newton and Leibniz, and their role in promoting the progress of science, society and human thought after the Renaissance. In the teaching of number system, students can be introduced to the development and expansion process of number system, so that students can feel the internal motivation and external motivation of the emergence and development of mathematics and the role of human rational thinking.