Excel has a default name for each cell, and its naming convention is the column label plus banner, for example, D3 represents the fourth and third rows of cells. If you want to rename a cell, you can use the following two methods:
Just click a cell with the mouse, you will see its current name in the upper-left corner of the table, and then use the mouse to select the name, you can enter a new name.
Select the cell you want to name, click the insert → name → definition command, display the Define Name dialog box, enter a name in the name in the current workbook box, and click OK.
When you name a cell, be aware that the first character of the name must be a letter or Chinese character, it can contain up to 255 characters, can contain large, lowercase characters, but the name cannot have spaces and cannot be the same as cell references.