The seismological prediction indexes of seven earthquakes (M≥5.0) occurring in Liao-ning since 1970 were analyzed from medium-small seismicity images and sequential scanning. Results show that the earthquake-reflecting effect of certain parameters, i.e. seismic gap, seismic belt, b value, A(b)value, D value, earthquake deficiency, and XY value is relatively good. Combining previous results of enhancements, concentration of moderate earthquakes, and characteristics of earthquake swarms in Liaoning, a seismological index system of earthquakes with a magnitude of M≥5.0 was constructed. Earthquake intensity prediction indexes mainly include the enhancement and concentration of moderate earthquakes, earthquake swarm sequences, seismic gaps, and belts, and the maximum magnitude of a forthcoming main shock is estimated by adding 1.5~2 to the value of the maximum magnitude of the earthquake for the above four items. The location prediction index is similar to the earthquake intensity prediction index, and the method determined shows the following: earthquakes with a magnitude of M≥5.0 generally occur in the seismic gap and belt or nearby region; if there is an increase and concentration in moderate earthquakes the location of forthcoming earthquakes with M≥5 will be close to where the last moderate earthquake occurred; if there is an earthquake swarm sequence, the forthcoming main shock will occur within 200 km of the swarm (if there is a foreshock sequence, the main shock will occur near the location of the sequence). In addition to the four items used in earthquake intensity and location prediction indexes, the seismic time prediction indexes include the b value, A(b) value, D value, earthquake deficiency, and the XY value. Furthermore, the anomalies of A(b)value, D value, earthquake deficiency, and XY value commonly occur about one year before the earthquake; disappearance of the seismic belt and seismic gap, and b value anomalies commonly occur about half a year before an earthquake; and the foreshock sequence commonly occurs about 1 to 20 days before the main shock.