Abstract: Presented is an experimental investigation of the shear performance of seawater sea-sand concrete beams reinforced with super elastic SMA bars, in which super elastic SMA bars are used instead of ordinary steel bars, and seawater sea-sand is utilized instead of freshwater river sand. Four specimens subjected to unidirectional cyclic loading are designed, fabricated, and tested, being monitored using DIC equipment. Load-deflection curves and stiffness degradation curves are plotted upon the test results. Furthermore, analyzed are the damage characteristics, shear bearing capacity, self-resetting capacity, shear ductility, and other properties of each specimen. The results indicate that the use of SMA reinforcement instead of common steel bars significantly improve the specimens' shear bearing capacity and ductility, slow down the degradation of the specimens' stiffness, and boost the self-resetting ability of the beams. The use of SMA stirrup reinforcement prove to enhance the shear resistance more significantly than SMA longitudinal reinforcement. Additionally, an increase in the shear-to-span ratio results in a reduction of the specimens' shear bearing capacity and ductility and accelerates the rate of stiffness degradation.