Abstract: The Ti-Cu laminated composite was prepared by underwater explosive welding. In order to study the deformation and failure mechanism of Ti-Cu laminated composite under static loading, uniaxial tensile experiment and the pre-notched three-point bending test were carried out at room temperature, which were compared with as-received Ti and Cu. Besides, the fracture morphology of Ti-Cu laminated composite was observed by SEM. Microscopic analysis after tensile and three-point bending tests shows that in the tensile test, the failure of Ti-Cu laminated composite is due to the coupling effect of multi-direction stress. Work hardening and interface effect make the tensile strength of Ti-Cu laminated composite much higher than that of as-received Ti and Cu; In the pre-notched three-point bending test, the fracture of Ti-Cu laminated composite is the results of multiple damage effect and failure effect. A large number of slip bands and deformation bands are formed in the Cu layer, and a large number of microcracks are generated in the Ti layer. Due to the accumulation of multiple damages, a unique failure pattern of wave propagation trajectory is formed in the Ti-Cu laminated composite; Compared with homogeneous metal, the complex deformation and failure behavior of Ti-Cu laminated composite play an important role in improving their mechanical properties.