Abstract: Objective To observe the pain level of patients during skin soft tissue expansion and analyze the influencing factors,so as to provide evidence for the management of patients’pain.Methods From March 2017 to December 2017,220 patients treated by tissue expansion were included.General data,social support level,and pain self-efficacy scale were investigated.NRS-10 scale was used to evaluate the patients’pain level during the expansion procedure.The influencing factors of pain were analyzed.Results The patient had the highest pain level 6.75±1.25 points during the expansion,then gradually decreased,and fell to 2.94±1.28 points 1 hour after expansion.Pain levels reported by women,young patients,first-time tissue expansion,and head-face tissue expansion were significantly higher(P<0.05).The pain level was significantly lower at the 17th to 24th expansion(P<0.05).The pain level during expansion was negatively correlated with patient pain self-efficacy(P<0.01).Conclusion The change law of pain during tissue expansion procedure and the influencing factors are worthy of attention,in order to help assessing the cause of pain,identify key populations who need pain management and improve patient's pain self-efficacy,so as to reduce expansion pain

Key words: Skin soft tissue expansion, Pain, Influencing fact