Under the background of the rapid development of educational informatization, the training of computational thinking has become a crucial goal in primary school information technology teaching. Computational thinking is not limited only to the traditional logical reasoning and problem-solving ability, but also covers a wider range of thinking fields, including abstract thinking, systematic thinking, and innovative thinking ^[1]. The training of computational thinking can help students to conduct effective logical reasoning in the face of complex problems, to find the best way to solve problems. At the same time, students are encouraged to jump out of the traditional thinking frame when facing problems and propose novel and unique solutions to effectively cultivate their creativity and innovation ability, to enable students to better adapt to the needs of future social development and improve their comprehensive competitiveness in various fields. In this regard, this paper first clarifies the training principles of students’ computational thinking in information technology teaching in primary schools, and then puts forward effective training countermeasures, to provide some references for relevant researchers.