Objective To investigate and explore the factors leading to postoperative delirium（POD）in elderly patients with hip fractures,and to propose relevant handling measures．Methods From August 2019 to December 2022,82 cases of elderly patients with hip fractures who underwent surgical treatment in Nanyang Hospital of Traditional Chinese Medicine Dushan District were selected as the research subjects．All patients underwent mechanical pain threshold assessment 1 day before surgery,and their postoperative delirium were determined 7 days after surgery,followed by correlation analysis,and relevant handling measures were proposed．Results Seven days after surgery,there were 12 patients（delirium group）of POD,accounted for 14.6%,and 70 patients（non delirium group）without POD,accounted or 85.37%．There was no significant difference in genders,body mass index,fracture types and fracture to surgery time compared between the delirium group and the non delirium group（P>0.05）． However,there were significant differences in ages,preoperative hemoglobin levels and preoperative albumin levels compared between the delirium group and the non delirium group（P<0.05）．The pain threshold level of the delirium group on the first day before surgery was significantly lower than that of the non delirium group（P<0.05）．Spearman analysis showed that POD was associated with preoperative pain threshold,ages,preoperative hemoglobin and preoperative albumin levels（P<0.05）．Logistic regression analysis showed that the preoperative pain threshold level,ages,preoperative hemoglobin and preoperative albumin levels were all independent risk factors for the development of POD（P<0.05）,preventive nursing intervention should be actively strengthened．Conclusions The incidence of POD is high in elderly patients with hip fractures．Preoperative pain threshold level,age,preoperative hemoglobin and preoperative albumin levels are all factors that contribute to the occurrence of POD．It is necessary to actively strengthen preventive nursing interventions．