my %hash1 = ( 'A' => { 'log1' => [ '1', '0.0163934' ], log2' => ['1','0.0163934'], 'log3' => ['1','0.0163934' ], } 'B' => { 'log1' => [ '1', '0.0134521' ], 'log3' => ['2','0.0244508'], } ); my %hash2 = ( 'p0001' => { 'log1' => '1', 'log2' => '3', 'log5' => '1', 'log8' => '1',... } 'p0002' => { 'log1' => '1', 'log3' => '2',... } p0004 => ..., p0056 => ..., );