A pivot analysis method using a condition group is applicable to a front end processing device and includes the following steps. A file name processing interface is presented according to a plurality of file names. A file name selection value is received via a first sub interface of the file name processing interface. A range setting value is received via a second sub interface of the file name processing interface. A file name computing value is received via a third sub interface of the file name processing interface. A file name processing value generated by integrating the file name selection value, the file name range setting value and the file name computing value, is outputted. A multidimensional array is received to present a pivot analysis table.