Abstract: mathematics is a very logical and comprehensible subject, but primary school students are limited by age and lack of logical thinking ability. In a sense, primary school mathematics classroom bears the responsibility of cultivating students' logical thinking ability. So, how do students develop logical thinking ability in primary school mathematics classroom teaching? This is an important problem in primary school mathematics education. The purpose of this paper is to explore how to cultivate students' logical thinking ability in primary school mathematics classroom, in order to provide reference for primary school mathematics teaching.