Abstract: The medium term, short term and imminent anomalies occurred in ZK03 well might be relevant to Indonesia M8.7 earthquake.The figure of daily mean value in resent year showed:the medium term anomaly with impulse jumps appeared 11 months before the event, and the maximum of anomaly was 84 times of the normal rising rate;the short term anomaly appeared 4-1 month before the event, and the maximum of anomaly was 274 times of normal mean fluctuation;the imminent anomaly appeared 9 days before the event, and the maximum of anomaly was 2.5 times of normal mean fluctuation.These anomalies might be due to the temperature variation of subsurface fluid that caused by transmission of long cycle waves through upper mantle or asthenosphere before the earthquake.