You need to separate each page of Word with "section breaks". Taking word2007 as an example, select "Page Layout'-"Separator"-"Section Break"-"Next Page". This will add a section break between the two pages to be separated. Then select the second section Header and footer in the "Design" tab, cancel "Link to previous header". This is the preparation work, you can set different page numbers.

One section: Select "Design" - "Page Number" - "Page Number Format" - "Select Coding Format I" - "Start Page Number"; "Page Number" - "Bottom of Page Number", select one, and the page number of the first section will be set. ;

Section 2: Move the mouse to the page number setting position of the second section, and repeatedly select "Design"-"Page Number"-"Page Number Format"-"-"Select Encoding Format 123"-" "Start page number"; "Page number" - "Page number bottom" select one, and the page number of the second section is also set.