Open the ppt text bar, which is now a text paragraph by default.

Then in the property bar above, find the paragraph style option setting as shown in the figure, and click Open to display a variety of styles.

When the line spacing is 2, you can see that the blank lines between paragraphs become larger.

We can also set the specific value of line spacing according to our own needs and open the line spacing option setting bar.

In the following line spacing settings, you can adjust the specific attribute settings of line spacing, including the settings before, after and in the middle of line spacing.

Line spacing settings can also be found in paragraph styles.