Based on the method of anomaly recognition and mark system for the precursor subject

the characteristics of precursor anomaly of the ground fluid have been identified and studied during the Heze M59 earthquake in 1983 and the features of stages

layer and synchronism of precursor anomaly of ground fluid were analyzed. Using the method of the multilayered prediction on ground fluid anomaly variations

the long term

medium term and short term forecast has been tested for the Heze M5.9 earthquake based on variations of change rate of anomaly frequency and accumulated anomaly frequency of ground fluid before the earthquake.