1, the computer opens the document, click "Insert" on it, and then click "Picture".

2、? Enter the folder, click on a picture with a gray background, and then click "Open".

3. After uploading the picture, double-click the picture to enter the picture tool interface, and click "Increase Contrast" to adjust according to the gray level of the background color of the picture. For example, the contrast of this picture is +40%.

4. Enter the computer folder, click a picture, and then click "Open". Click "Increase Brightness" and adjust it according to the gray background color of the picture. For example, the brightness of this picture is +20%.

5. After completion, the gray background color of the picture has been deleted.

6. Right-click the picture, click Save As to save the picture, and then print it.