To investigate the related factors of nosocomial infection for ethanol-induced mental disorders in patients with diabetes, and to provide a basis for the prevention of hospital infection.

The data of 63 patients with mental disorders due to alcohol induced mental disorders from June 2010 to December 2014 in our hospital were analyzed, retrospectively.

All the 63 cases with mental disorder induced by ethanol in patients with diabetes mellitus and the incidence of infection was 18.37%. Infection of the top three were upper respiratory tract, gastrointestinal tract and lower respiratory tract infections, accounting for 53.97%, 22.22% and 53.97%, respectively. In delirium tremens number of hospital infection in patients with the highest rate (30.43%), with significant differences compared with the other clinical subtypes (χ² = 11.23, P < 0.05).

The infection incidence rate is relatively high among patients with mental disorders induced by alcohol complicated with diabetes mellitus, the site of infection mainly concentrated in the respiratory tract, which was related with blood glucose, the spirit of diseases actively hypoglycemic treatment, the elderly patients with mental rehabilitation nursing work should be strengthed.