By using the method of correlation analysis to geomagnetic data Z21 recorded in 8 geomagnetic stations in Hebei Province from 1981 to 2006. It is found that abnormal correlation coefficient have good relationship with the earthquakes of magnitude Ms≥5.0 in Hebei and neighboring area. In 26 years 18 abnormal events appeared, in which 13 events respond to Ms≥5.0 earthquake in 10 months. In this way, 15 earthquakes should be predicted, 3 were falsed for prediction and 2 were missed. A initial and quota parameter suitable for the earthquake prediction in Hebei Province is suggested.