Background
The postpartum period (or puerperium), called the “4th trimester”, commonly referring to the time from the expulsion of the placenta through the first six to 8 weeks after birth, is a time of convalescence for the mother, impacts on the mother’s short-term and long-term health and well-being, and lays the foundation for the newborn’s development [Studies have suggested that birth outcomes and postpartum health could be significantly influenced by maternal health literacy (MHL) [It has been widely acknowledged that improvement in health literacy is achievable with appropriate communication strategies, techniques or practices, among which the teach-back method has been considered the most recommendable for its simplicity, harmlessness and effectiveness across different medical settings and populations [For adding empirical evidence, knowledge and experience of using teach-back method for postpartum health, this study aimed to evaluate the effects of the teach-back method among Chinese women with LMHL in terms of MHL, postpartum health behaviours and postpartum maternal-infant health outcomes. Hefei, the provincial capital of Anhui in China, provides a suitable research context for this subject. Anhui Province, with a population of 61.03 million, had 645,000 newborns in 2020 [