There was no definite answer to the question of how many extra-cursory books a primary school student should read every day. Because reading extra-cursory books had many benefits for the growth and development of primary school students, the number of books read was not the most important. On the one hand, reading books outside of school can help primary school students develop interest and habits in reading, improve reading comprehension ability, enrich imagination and creativity. In addition, reading books outside of school could also allow primary school students to come into contact with different cultures and knowledge, expand their horizons, and enhance their cross-cultural communication skills. On the other hand, the learning tasks of primary school students are also very important. We should ensure that they can complete the learning tasks stipulated by the school and have enough time for other activities. Therefore, when arranging the reading time of primary school students, it is necessary to take into account their learning situation and reading needs, and arrange the reading time and content reasonably to avoid over-reading or under-reading. The most important thing is that parents and teachers should provide a good reading environment and atmosphere for primary school students to encourage them to read more good books to cultivate their interest and habit in reading.