Abstract: Objective To investigate the usage of antibiotics in psychiatric hospital so as to promote the rational use of antimicrobial drugs. Methods The medical records of 802 patients discharged from our hospital from September 1st to September 30th of 2015 were sampled for retrospective review of their basic conditions and the application of antibacterial drugs. Results From them 95 cases were administrated with antibacterial drugs, and the usage rate was11.85%, among which the preventive administration accounted for 9.47%, the therapeutic use 73.68%, and the ones using antibiotics with no indications 16.84% (P < 0.001), single medication accounted for 84 cases (88.42%), double medication 11 cases (11.58%) (P < 0.000 1). The bacterial exeamination rate was 21.05%. Conclusion There exist irrational phenomena in our psychiatric hospital in terms of indications of antibacterial drugs, preventative medication, combination medication, etc. So the training education and inspective management should be strengthened.

Key words: psychiatric department, inpatient, antibiotic