4. The Rationale:In China, the studies of ziprasidone im treating agitation focus on schizophrenia. But in the foreign country, ziprasidone im also is approved to treat psychotic agitation, including bipolar and schizoaffective disorder. And in the clinical practice of China, ziprasidone im is also used to treat other patients, although the evidence is less. In this study, we assume ziprasidone im treat the psychotic agitation is effective and safe.