Abstract: Accurate estimation of the quality factor(Q) is essential for enhancing seismic data resolution and reservoir characterization.Conventional Q estimation methods generally utilize post-stack data, which neglect the impacts of raypaths.Moreover,the average effect of stacking alters the attenuation of seismic data,reducing the accuracy of Q estimation.Compared to post-stack data,the pre-stack data more faithfully preserve the attenuation properties of subsurface media,enabling more accurate Q estimation.Therefore,this study converted pre-stack data into the apparent velocity and travel time(R-T) domain,using the radial trace(RT) transform.Combined with the logarithmic spectral area double difference(LSADD) method,a pre-stack Q estimation method named QVAV_LSADD was proposed.This method accounted for the impacts of raypaths under imprecise interval velocities.Its high accuracy and strong noise resistance were validated through the processing of both synthetic and real data.