This study retrospectively investigated accidents in a psychiatric inpatient unit by analyzing special record charts over a 11-year period. There were 501 accidents noted during this period, comprising 6.58% of the total admissions. The highest incidence of accidents, in order of frequency, was seen in violence, falls, escapes, parasuicide, sexual assaults, suffocation, fire-setting, burns, scalding and sudden death. Schizophrenia is the most common diagnosis among patients with accidents. If compared with total number of admissions, substance abuse had the highest incidence of accidents. Most of the accidents, except violence and escape, occurred commonly on the evening and the night shifts. The most place where accidents occured frequently was the patients’ bed unit. The results of this study provide preliminary data for clinical staff to identify and manage accidents.