Abstract:An MS6.0 earthquake hit Changning,Sichuan,China at 22:55 p.m. on June 17,2019(CST). China Earthquake Networks Center releases the formal quick report within 10min and has been monitoring the aftershocks. Meanwhile,China Earthquake Networks Center,under the cooperation with some institutes,analyzing and processing the data from the monitoring networks,produces and collects 19 data products of 10 categories. These products illustrates that this earthquake,whose intensity of the meizoseismal area reaches Ⅶ degrees,is a thrust event with the aftershocks in the NWW direction and,according to the distribution direction of the main shock and the aftershocks,it can be preliminarily inferred from the regional seismotectonics that the seismogenic fault is a NW-direction hidden fault.