Abstract: Objective To investigate the nutritional status of elderly inpatients with diabetic foot ulcer （DFU） and analyze the related factors of malnutrition. Methods Inpatients aged ≥60 years old with newly diagnosed DFU who were admitted to the endocrinology department of a hospital in Xi'an from January 1, 2019 to December 31, 2020 were taken as the research subjects to carry out a nutritional status-related survey. The incidence of malnutrition in elderly DFU patients was analyzed by descriptive epidemiological analysis, and the influencing factors of malnutrition in DFU patients were analyzed by univariate and multivariate analysis methods. Results Among the 559 elderly inpatients with DFU included in the study, there were 321 males and 238 females, with a male-to-female ratio of 1.3∶1. The age ranged from 60 to 88 years old, with an average age of （71.57±4.39） years. The mini-nutritional assessment score of 559 elderly inpatients with DFU was （14.81±4.39）, and 387 were malnutrition, with a malnutrition rate of 69.23%. The results of multivariate Logistic regression analysis showed that for every 10 years of age increase （OR=2.344）, the course of diabetes mellitus>5 years （OR=2.179）, DFU infection （OR=1.728）, HbA1c>7.0% （OR=2.502）, C-reactive protein ≥10 mg/L （OR=1.850）, Wagner grade 3-5 （OR=8.406）, the higher the geriatric depression scale score （OR=6.013）, the higher the risk of malnutrition in elderly DFU patients; the higher the activity of daily living score （OR=0.106）, the lower the risk of malnutrition in elderly DFU patients. Conclusion Malnutrition is common in elderly inpatients with DFU, and there are many related factors affecting their nutritional status. Targeted prevention and intervention measures for improving their nutritional status need to be strengthened.

Key words: Elderly, Diabetic foot ulcer, Nutritional status, Influencing factor