Abstract: During the attenuation of anomaly amplitude without surface consistent,surface consistent constrained anomaly amplitude attenuation technology plays an important role in amplitude-preserved prestack denoising.The technique mainly includes statistical computation of amplitude,iterative decomposition of statistical amplitude,discrimination of anomaly amplitude and computation of scaling factor,as well as adjusting the amplitude of every trace constrained by surface consistency.By analyzing the surface consistent constrained anomaly amplitude attenuation technology,we realized the multi-entry program based on CGG system.Combining with actual data processing,the parameter selection method was discussed.Meanwhile,the actual data application effect was analyzed by comparison.