Abstract: OBJECTIVE To analyze the clinical characteristics of urinary tract infections and blood glucose control in elderly patients with type 2 diabetes mellitus. METHODS Fifty-two elderly patients with type 2 diabetes mellitus combined with urinary tract infections who admitted in our hospital from Nov. 2015 to Jan. 2017 were selected and included into observation group, and fifty-one elderly patients with type 2 diabetes mellitus without urinary tract infection at the same period were selected as control group. The clinical characteristics of urinary tract infections in elderly patients with type 2 diabetes mellitus were analyzed, and the treatment time, course of disease and biochemical indicators were compared between two groups. RESULTS A total of 52 strains of pathogenic bacteria were isolated from 52 cases of infected patients, of which 48 strains were gram-negative bacteria accounting for 92.31%, mainly Escherichia coli, and 4 strains were fungi accouting for 7.69%. The treatment time, course of disease, urea nitrogen, triglyceride, HbA1c, fasting blood glucose and postprandial 2h blood glucose of observation group were (16.62±2.90)d, (11.34±2.00)years, (6.73±1.23)mmol/L, (2.08±0.70) mmol/L, (14.03±1.80)%, (8.30±1.92) mmol/L and (14.41±2.22) mmol/L, which were significantly higher than (12.48±2.50)d, (8.46±2.03)years, (4.67±1.20) mmol/L, (1.40±0.40)mmol/L, (9.64±1.56)%, (7.05±1.17)mmol/L and (11.12±1.90)mmol/L of control group (P<0.05). CONCLUSION The main pathogenic bacteria of urinary tract infections in elderly patients with type 2 diabetes mellitus is E. coli, meanwhile, the biochemical indicators, treatment time and the course of disease are significantly increased, and the blood glucose control effect is poor.