Nickel based superalloy 4777DS is used in turbine blades and other engine components due to its creep strength and oxidation resistance at high temperatures. Surface recrystallization can have adverse effects on the mechanical properties of alloys. The effects of different sand-blasting processes on recrystallization defects and the occurrence of recrystallization in 4777DS alloy were studied using optical microscopy and scanning electron microscopy. The analysis of the recrystallization structure on the alloy surface after sandblasting shows that the depth of recrystallization on the alloy surface increases with the increase of sandblasting intensity, time, gravel diameter, and the decrease of sandblasting distance. After sandblasting, the deformed sample showed that the γ "phase near the sandblasted surface changed from a butterfly shape to a long strip shape, and some of the deformed γ" phase surrounded the areas with greater deformation. At the same time, TEM observed a large number of dislocations distributed in the γ matrix channels and γ "phase. The different gamma "phases between dendrites affect the growth of recrystallization, resulting in the formation of wavy grain boundaries. No inhibitory effect of eutectic or carbide on recrystallization has been found. Due to the small size of surface recrystallized grains and the presence of residual stress, a new layer of recrystallized grains will form in the subsurface.