Abstract: Objective: To promote the nursing quality of pain assessment, and to improve the quality of pain management in hospital. Methods: Guided by the Precede-Proceed Model, we analyzed the predisposing factors, enabling factors and reinforcing factors that affected the nursing quality of pain assessment, and took measures to promote the development of various factors. Results: Guided by the Precede-Proceed Model, the pain assessment rate for new in-patients was increased significantly; the intervention rate and reassessment rate for patients with pain scores greater than or equal to four points were increased significantly; the pain assessment coincidence rate for patients with pain scores greater than or equal to four points were increased significantly (P<0.05). Conclusion: The Precede-Proceed Model is helpful to improve the nursing quality of pain assessment, and improve the quality of pain management in hospital.