It’s universally acknowledged that the unified primary school Chinese textbook becomes not only the main instrument and materials for teachers, but also the significant means for cultivating pupils’ core literacy, such as values, competences, and virtues. Adopting the quantitative research paradigm, the research analyzes questionnaires of 1801 primary school Chinese teachers from seven provinces. The results show the unified primary school Chinese textbook is compatible with teachers’ needs, which is convenient for them to prepare courses and arrange the class, however it puts higher requests on teachers’ knowledge. Furthermore, teachers’ perceived adaptability of textbooks is affected by multiple demographic variables such as gender and age, as well as teachers’ professional experiences, including qualification, years of teaching, job title, and starting time of using the textbook. In conclusion, there are several suggestions for helping teachers make better use of the unified primary school Chinese textbook, i.e., create learning communities for teachers to enrich extra-disciplinary knowledge and improve ability to analyze learning materials, and enhance training for young teachers.