AZ31 alloy sheets were subjected to continuous bending (CB) process with various accumulated strain in a single pass at room temperature, and followed by annealing treatment. The corresponding microstructure and mechanical properties of as-received and CB sheets were investigated in the present paper. The obtained results indicated that no twins were observed in all microstructures during CB process. Abnormal grain growth occurred in the surface part after annealing and the depth of coarse-grained layer increased with the accumulated strain increasing. Moreover, the CB sheets in annealing condition exhibited a RD-tilt basal texture, and the inclination angle increased with the accumulated strain increasing. Compared to the as-received sample with a strong basal texture, the CB processed samples exhibited better stretch formability (2.3mm vs. 4.9mm, increased by ~113%), due to smaller r-value and larger n-value, which was related to the texture evolution.