To inspect surface contamination of pre-bond surface for adhesive bonding, laser-induced breakdown spectroscopy (LIBS) was examined. LIBS could detect silicone oil adhered at the surface of aluminium alloy plates as low as 11.8mg/m(2) in surface concentration. It was revealed that similar contamination caused weakened adhesive bonding. It proves that the LIBS can be applied for pre-bond surface inspection. Si signals can also be detected at failure parts of samples after tensile strength tests of adhesive bonding.