Objective To explore how to optimize management process of pressure injury for surgery patients by applying information system.Methods We built an integrated surgery patients pressure injury management information system based on chain-type process along with controlling key links and realizing monitoring in a whole process and many links for surgery patients from be hospitalized to leave hospital.This research took the surgery patients pressure injury chain-type process as a breakthrough and selected 1240 patients as subjects in experimental operating room.A total of 578 patients were in control group in May 2016 before implementing information system and 662 patients were in observation group in May 2017 after implementing information system.We compared the qualified rate of pressure injury assessment,accuracy rate of screen for patients with high-risk pressure injury and being with pressure injury,accordance rate of description in skin condition during transportation and handover,the incidence of pressure injury in hospital and surgery patients in the first stage,the second stage and above.Results The qualified rate of pressure injury assessment,accuracy rate of screen for patients with high-risk pressure injury,accordance rate of description in skin condition during transportation and handover of observation group was 99.24％,100％and 100.00％significantly higher than those of control group(P< 0.05).The incidence of pressure injury in hospital and in the first stage of surgery patients was 2.95％and 2.65％in observation group with significant differences compared with those in control group(6.51％,5.82％)(P< 0.05).Conclusions The integrated surgery patients pressure injury management information system based on chain-type process realizes a full,continuous,accurate,dynamic evaluation and monitoring for patients' skin.It can effectively improve the nursing quality of pressure injury and is convenientfor managers to carry out a continuous improvement.