1. First, open our computer, find and open WPS software on the desktop, and create a new Word document, so that you can enter the page of Word, and now you can insert a text box in the page.

2. Then find "Insert" in the menu bar above, and then select a text box, then you can randomly select a text box, and then you can generate a text box in Word.

3. After inserting a text box, one of the ways to change the size of the text box is that we can change the size of the text box by dragging the edge of the text box with the mouse arrow to move the edge.

4. Another way is: We can also right-click the border of the text box, click "Format Shape", and then adjust the relevant data of the text box in the text box to adjust the size of the text box.