Abstract: In order to evaluate the effect of grain boundary character distribution on the dissolution corrosion resistance of 15-15Ti austenitic stainless steel in static lead bismuth eutectic (LBE), the test of solution annealed (SA) and grain boundary engineering (GBE) specimens was carried out at 500℃ in LBE with 10^-8wt% oxygen concentration for 2200 h. The results show that a lot of LBE penetrate on the surface of SA and GBE samples along the random grain boundary into the substrate, indicating the typical dissolution corrosion morphology. LBE is suppressed or bypassed at Σ3 grain boundaries. Hence, Σ3 grain boundaries play a certain inhibitory effect. Ni and Cr elements significantly dissolve and occur ferrite transformation. Large grain shedding occurs on the surface of the SA sample, and the LBE penetration depth of SA specimen is less than that of the GBE specimens. The weight loss and thickness reduction of SA specimen are higher than that of GBE specimen. The ratio of coincidence site lattice (CSL) grain boundaries (such as Σ3) in the GBE specimen is higher than that of the SA specimen, which break the connectivity of the random grain boundary network.