Abstract: On the basis of physical precursory segmentation,the mid-and short-term anomalies （one-year-long scale） of strong and moderately strong earthquakes are summed up in this paper.It is thought that the mid-and short-term anomaly of seismicity is characterized by showing mid-short-term quiescence （one year or so） beside the epicenter, as well as the mid-short-term gap.The developing process of mid-term stage as a whole characterizes the mid-and short-term precursory anomalies of multi-disciplines.Since different sized earthquakes show obvious difference to connotation of the seismogenic process in about one year or so,the mid-and short-term precursory characteristics of strong earthquakes （more than M S 7） and moderately strong earthquakes are studied and summarized respectively in this paper.

Key words: Mid- and short-term anomaly, Strong earthquake, Moderately strong earthquake, Earthquake prediction