1. Open the Excel document, select the cell data that you want to draw the double ordinate axis, then click the toolbar "insert" → "chart" → "Column chart" → "Two-dimensional column chart"
2. After inserting the column chart, we will find that it is just a normal single axis, if you want to draw a double vertical axis, select any series and then right-click to select Set data series format
3. Select the secondary axis in the Format data series, then click Close.
4. After returning the document, we can find that the two-axis drawing is finished.