 The rating scales used in this study are standard psychiatric rating scales with good validity and are widely used in the study of antischizophrenia drugs and in the treatment of patients with schizophrenia in China. The PANSS is developed from two early rating scales, namely the brief psychiatric rating scale BPRS and the psychiatric rating scale. The high inter-investigator reliability and repeated measurement reliability of these scales have been proved by multiple studies. The clinical global impression CGI is a simple but convenient global impression scale. It is applicable to any patients treated and studied by the psychiatric department. The Carlgary depression scale for schizophrenia CDSS is used to evaluate the depressive symptoms of patients with schizophrenia. It has good reliability and validity. The abnormal involuntary movement scale AIMS is another evaluation tool consisting of 12 items. The AIMS is used to evaluate the abnormal involuntary movements related to antischizophrenia drugs. The AIMS is nearly the most frequently used multi-item rating scale evaluating of tardive dyskinesia. The Simpson and Angus scale SAS is also a rating scale commonly used since its release in 1970. The validity of SAS has been verified in the double blind and placebo-controlled study involving two haloperidol doses. 