Acoustic Emission（AE） monitoring of hard and brittle and hard ground zirconia and alumina engineering ceramics created in their ground surface was studied，and the correlation between the removal volume of a single diamond abrasive scratch ceramic materials and its corresponding acoustic emission signals were studied. The experimental results show that with the increase of the removal volume of a single diamond abrasive scratched ceramic，the signal energy ratio of the acoustic emission signal in the low-frequency range increases，and the eigenvalues such as root mean square，maximum amplitude and standard deviation of acoustic emission signal increase，and the increasing trends of the two ceramic materials are different; But the characteristic values of these acoustic emission signals are all related to the corresponding removal volumes of the two kinds of ceramic materials. At the same time，time series autoregressive AR（2） model of the acoustic emission signals of a single abrasive scratch ceramics can completely represent the corresponding acoustic emission signals. The absolute values of the time series autoregressive AR (2) model eigenvalues increase with the increase of the two kinds of ceramics scratch removal volumes，and the increasing trends are similar to that of the acoustic emission signal eigenvalues. Acoustic emission signals can be an ideal data source for the online monitoring of surface creation in grinding processes of engineering ceramics.