In the primary school English Teaching under the new curriculum standard, a successful English teacher should consciously cultivate students' lasting interest in English, stimulate their interest and thirst for knowledge, encourage them to be in a good learning state, and make them like learning English, be good at learning and learn how to learn. In view of the importance of cultivating primary school students' interest in English learning, this paper starts from two aspects of influencing factors and cultivating learning interest, so that students can turn their interest into motivation to participate in practice, and this interest runs through the whole teaching process, so that English teaching is full of vitality and vitality, and the requirements of the new curriculum standards are truly implemented.