精神疾病患者住院高峰期具有一定的周期规律 ,住院人数从春天开始上升到初夏达高峰 ,以后逐渐减少 ,这已成共识。现调查本院近 7年来的住院高峰期 ,报告如下。1　资料和方法资料取自本院病案室 1992～ 1998年月报表 ,以住院患者人次为分析数据。分析采用圆形分布理论和方法 ,应 The peak period of hospitalization for patients with mental illness has a certain periodicity, and the number of hospital admissions has risen from the beginning of spring to the peak of early summer and gradually decreased afterwards. This has become a consensus. The hospital is currently investigating the peak hospital stay in the past 7 years. The report is as follows. 1 Data and methodological data were obtained from the monthly report of the hospital’s medical record room from 1992 to 1998, and hospitalized patients were used as analysis data. The analysis uses circular distribution theory and method