The wave-front aberration produced by atmosphere disturbing can be compensated with stimulated Brillouin scattering (SBS) phase conjugate technology. And with velocity compensated mirror, laser tracking and pointing at moving target in orbit is realized. The possibility of this method is proved by Gauss beam phase conjugating resonator theory. The principle experiment about laser tracking and pointing at moving target in orbit outdoor 1.27 km away is carried out. Moving target in track can be tracked and pointed by SBS phase conjugate technology, and energy of the laser can be concentrated to the target within a small area. The largest energy arriving target is up to 24.0 mJ.