Word column after the text evenly distributed in the left and right two columns, rather than fill in the left column and then fill in the right column, how to do?

It should be that some paragraphs are selected when setting columns.
Solution:
reset the column, through the menu: format → column → column number set to 2, and set “apply to” to “whole document” → confirm.
After returning to the normal interface, delete all the “section break (continuous)” marks in the document. If you can’t see the “section break (continuous)” marks because they are hidden, you can click the “show/hide edit marks” button in the toolbar to show them.

Location of “show/hide edit mark” button:

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