The seismo-ionospheric phenomena,as one of the physical phenomena related with earthquake events,have been reported continuously with the accumulation of observation data and the related earthquake case studies. At present,the lithosphere-ionosphere compling has become an interdisciplinary subject of seismology and space ionospheric physics,and has become a research hotspot. A great deal of research work on seismo-ionospheric phenomenon suggested that the ionospheric anomalies are very complex. In this paper,we briefly reviewed the main research achievements of some major seismo-ionospheric phenomena in recent years. The main research results are firstly classified according to research parameters,earthquake magnitude,occurrence time,anomaly location,positive or negative changes,then the relation between the occurrence time and earthquake magnitude,the spatial distribution characteristic of the anomaly,the relation between the epicentre distance and the earthquake magnitude are obtained. The results of our work are expected to provide some references for the future studies on seismo-ionospheric phenomena.