When I insert page numbers, why do every page have the same page number?

Because section break was inserted in the first page, the page number on the second page did not continue from the previous section, but started from the first page.

This problem can be solved in the following ways:

1. Double-click the page number on the second page to open the Header and Footer Settings dialog box. Click the Format Page Number button;

3. Or select "Start Page Number" and set it to "2";

4. After setting, confirm.