Objective To analyze the effects of dagliflozin treatment applied to type 2 diabetes mellitus in terms of lipid metabolism and visceral fat. Methods A retrospective analysis of 80 patients with type 2 diabetes treated from May 2023 to Songyuan Hospital of Integrated Chinese and Western Medicine, Jilin Province in May 2024, were divided into two groups with 40 cases each groups according to the different treatment methods. The reference group received conventional treatment, and the study group received dagliflozin treatment, and examined the two groups' blood glucose index, lipid metabolism index and visceral fat index. Results After the treatment, glycosylated hemoglobin, fasting blood glucose and 2 hours postprandial blood glucose were lower than before the same group, and the study group was lower than the reference group (P<0.05). After treatment, triglycerides, total cholesterol and LDL cholesterol were lower than before the same group, and the study group was lower than the reference group (P<0.05). After treatment, visceral fat index, visceral fatin, visceral adipose tissue-derived serine protease inhibitors were lower than before treatment in the same group, and the study group was lower than the reference group (P<0.05). Conclusions Dagagliflozin treatment for type 2 diabetes can improve fat metabolism, reduce visceral fat and have high application value.