The present application provides a pre-stack time migration data processing method and device. The method includes: obtaining OVT-domain seismic data according to acquired wide-azimuth seismic data; performing static correction on the OVT-domain seismic data to obtain static correction processing data; performing speed analysis on the static correction processing data to obtain a root mean squarevelocity field; adding OVT information to the static correction processing data and regularizing the static correction processing data with the OVT information added so as to obtain OVT set seismic data; and performing pre-stack time migration processing according to the OVT set seismic data and the root mean square velocity field. The embodiments in the present application improve the processingefficiency of the pre-stack time migration, and save the time of pre-stack time migration data processing.