In this paper, circumstances and chief basis of medium term, short-term and impending earthquake predictions of the Laizhou earthquake(M=7.0) in June, 1983 and the Jing hong earthquakes (M=5.8, 5.3, 5.7) in Dec. 1982 and May 1983 were provided. The medium term prediction was put forward by the following:Anomalies had emerged in change of releasing speed of ∑√E. The stage in which ∑√E was picking up speed in this area was determined from this. Coming to the conclusion by periodic analytic methods-"Fisher" method et al. was that quickening of the release of ∑√E would last by the end of June, 1983. We determined by migrating regularity of earthquakes that earthquake would take place in the area where is to the south of Jinghong-Jiangcheng, Yunnan province. Bases of Short-term prediction is as following, Three stripe-belt of earthquakes of NE appeared in proper order in seismogenic process. Value of b came down from 1.3 to 0.55. Consulting sudden change of radon content inground water we calculated magnitude of future principal earthquake would be bigger than 6.5. We consulted the general modulation model of the reference[1] and determined place where is earthquake focus was modulated, thus made the impending earthquake prediction of the Laizhou earthquake (M=7.0).