Objective: To study the quality of life survey and social support and self-medical coping ability in patients with diabetic nephropathy. Methods: 100 patients with diabetic nephropathy who were admitted to the hospital from January 2018 to January 2020 were included in the study. The quality of life of all subjects was assessed through a quality of life questionnaire, and univariate and multivariate Logistic regression analysis was used to identify the related factors affecting the quality of life of patients with diabetic nephropathy. In addition, all subjects in accordance with the quality of life score height were divided into group A (≤80 scores) of 79 cases and group B (> 80 scores) of 21 cases, the differences in social support scores and self-medical coping ability of patients with different quality of life scores were analyzed, and Pearson correlation was used to analyze the relationship between quality of life and social support and self-medical coping ability of patients with diabetic nephropathy. Results: The univariate analysis showed that the quality of life of patients with diabetic nephropathy was related to age, disease course, smoking history, drinking history, hypertension history, take the medicine as directed by your doctor, diet as prescribed by the doctor, and frequency of exercise (all P<0.05). According to multivariate Logistic regression analysis, age > 35 years, disease course > 5 years, with smoking history, drinking history, hypertension history, not taking medication as prescribed, non-prescribed diet, and frequency of exercise ≤3 times/week were all independent risk factors for life quality of patients with diabetic nephropathy (all P<0.05). The scores of social support in group B were higher than those in group A (all P<0.05). The scores of fatalism and avoidance in group B were lower than those in group A, and the scores of other self-medical coping abilities in group B were higher than those in group A (all P<0.05). Pearson correlation analysis showed that the quality of life of diabetic nephropathy patients was positively correlated with the scores of family support, friend support, other people's support, as well as the scores of face, optimism, support, emotional catharsis, palliation and self-dependence, while negatively correlated with the scores of fate and escape (all P<0.05). Conclusion: In clinical work, health education for patients should be strengthened, good daily living programs should be developed for them, and attention should be paid to older patients and patients with a longer course of disease. In addition, the quality of life of diabetic nephropathy patients is closely related to social support and self-medical coping ability. [ABSTRACT FROM AUTHOR]