This study used composite patches to repair circular penetration damage on 2A12 metal sheets，and compared the tensile strength of four repair forms of test specimens：intact，circular penetration damage，single-sided repair and double-sided repair.Based on the single-sided repair process of composite patches，the tensile strength of three different aperture circular penetration damage adhesive repair test specimens was studied.Meanwhile，considering the influence of the intrinsic elastic strength and bonding strength of damaged aluminum alloys on the strength recovery rate of repaired parts，a correlation formula between the damage ratio and the required bonding area was proposed.The research results indicate that the repair effects of single-sided and double-sided patches on composite materials meet the acceptance criteria for the strength of repaired structures，with strength recovery rates reaching 99.68% and 109.43%，respectively.The tensile strength of three types of damaged pore size adhesive repair parts varies less with pore size.The fractures all occur at the cross-section where the metal base metal through-hole is located，and the composite patch shape is intact.The main failure modes are tensile failure of the mother plate and shear failure of the adhesive layer.