OBJECTIVE： To investigate the characteristics of serious ADR in psychiatric hospital， and to provide reference for effective and safe use of drugs in the clinic. METHODS： 114 cases of serious ADR in our hospital from 2004 to 2015 were analyzed retrospectively in terms of general information， primary disease， route of administration， dosage form， drug types， organs or systems involved in ADR and clinical manifestations， top 5 ADR-inducing drugs and main clinical manifestations， etc. RESULTS： Of 114 serious ADR cases， the number of female was more than that of male（71/43）. Patients aged 21-30 years old took up the greatest proprotion （35 cases， 30.70％）. The main involved primary disease was schizophrenia （54 cases， 47.37％）. Oral administration-induced ADR was most common （103 cases， 90.35％）. The main involved drugs were antipsychotics， occupying the greatest proportion （75 cases， 65.79％）. Digestive system involved was the most common （53 cases， 42.74％），  Olanzapine tablets had the highest incidence of serious ADR （23 cases， 18.55％）， the main clinical manifestation were both abnormal liver function. There were 8 cases of new serious ADR （7.02％）. Most of the ADR can be cured after drug withdrawal or countermeasures， no death case was found. CONCLUSIONS： Psychiatric drugs can induce serious ADR as treat psychiatric disease， among which the incidence of ADR induced by Olanzapine tablets is the highest and mainly manifestes digestive system symptoms. It is suggested to strengthen serious ADR monitoring to promote the safe use of drugs.