Most　studies　about　visual　search　on　Web　page　focused　on　factors　such　as　information　form　or　information　layout.　However,　there　are　few　about　information　quantity.　This　study　investigates　the　search　strategy　and　information　processing　mode　of　visual　search　on　Web　pages　under　information　overload.　Results　show　that　1)　users＇　search　strategies　on　Web　pages　with　and　without　information　overload　are　the　same　which　is　paying　more　attention　on　picture.　Information　overload　make　this　picture-oriented　strategy　more　significant.　2)　Under　information　overload,　users　are　more　likely　to　use　＇deep　search＇　information　processing　mode　which　is　decreasing　parallel　processing　and　increasing　serial　processing.　These　results　indicate　that　(1)　information　overload　doesn＇t　change　but　impact　users＇　search　strategy;　(2)　Information　overload　has　a　significant　impact　on　users＇　information　processing　mode.　This　study　provides　some　evidence　both　for　cognitive　psychology　and　human-computer　interaction,　especially　Web　page　design.　©　2011　Springer-Verlag　Berlin　Heidelberg.