Ultrasound elastography has been well applied to medical detection as a tool for diagnosis aid. However, in conventional ultrasound elastograms, there are patterned artifacts from correlated errors. And random fluctuations of the signal amplitude result in a match only occurrs at certain regions from pre-and post-compression window pairs. The artifacts should be prevented from diagnosis. A spatial displacement compounding method is proposed to correct the errors artifact reduction. It is proved that the method is in correct principle. The presented results from a commercial elastic phantom show some improvement in SNRe and CNRe.