Classroom teaching tact is a kind of sensitive, rapid and accurate judgment and response ability of teachers in the face of complex classroom teaching situations. The implementation of the new curriculum reform requires teachers to have a higher level of teaching tact. Based on the self-designed questionnaire, this study investigated 200 primary school students in Hunan Normal University, explored the main influencing factors of their classroom teaching tact, and verified the rationality, reliability and validity of the questionnaire structure. It is found that the differences of gender and major have no influence on the level of classroom teaching tact of primary school students on post internship, while the differences of professional identity, personality, teaching class size, teaching reflection and post job training will bring the differences of classroom teaching tact level of primary school students on post internship. The primary school students who have high degree of professional identity, outgoing personality, small class size, good teaching reflection and more job-related classroom teaching and training have higher level of classroom teaching wit. But at the same time, we should also consider the interaction of various factors and do a holistic and dialectical thinking on the analysis of the factors that affect the level of classroom teaching tact of primary school students.