Extracurriculum reading is a crucial part of Chinese education and one of the important ways to cultivate students'Chinese key competences.The importance of extracurriculum reading has been demonstrated by the fact that uniformly-compiled Chinese textbooks have included extracurriculum reading into the textbooks and the 2022 Compulsory Education Curriculum Standard has brought up the concept of"reading the whole book".Grade 3 in primary school is the key period for students to improve their reading abilities.Thus,extracurriculum reading should be involved in students'learning activities with a constructed framework including teaching plans,teaching materials,teaching process and assessment standard,in order to effectively facilitate students'extracurriculum reading.The aim of curriculumization of extracurriculum reading is to guide students to be interested in reading,to master reading methods,to get gained from reading,and to improve their Chinese key competences.