Caesarean section is one of the most frequent surgeries causing severe postoperative pain. Poor management of acute pain can contribute to postoperative complications, late recovery and the development of chronic pain. Moreover, it had been demonstrated that the intensity of postpartum pain is associated with depression. It is imperative to find out appropriate methods of postpartum pain alleviation. Currently, a lot of analgesic drugs and methods have been developed and used in clinical practice, such as patient-controlled analgesia, extended-release analgesics and multimodal analgesia. This prospective cohort study is aimed to investigate the outcome of each postoperative analgesic method used in caesarean section.