A Study To Evaluate The Efficacy And Safety Of Intramuscular Levosulpiride In Patients With Agitation Of Schizophrenia

Secondary Outcome Measures: To evaluate the change of Agitation Calmness Evaluation Scale(ACES), Clinical Global Impression(CGI, including CGI-S and CGI-I),PANSS total scores,Brief Psychiatric Rating Scale(BPRS) total scores and every item of PANSS-EC from baseline to the end of study (Time Frame: 72 hours) \[ Designated as safety issue: No \] To evaluate the change of patients' main complain, physical examination, lab and ECG tests, AE、Rating Scale for Extrapyramidal Side Effect(RSESE) and Barnes Akathisia Scale(BAS)from baseline to the end of study (Time Frame: 72 hours) \[ Designated as safety issue: Yes \]