PS There are three ways to change the background. The first is to use the magic wand tool to remove the background and then change the desired background color. The second method is to use the color range to select and subtract the background color, which is suitable for pictures with fragmented background color distribution. The third is to change the background color with the replacement color, which is suitable for changing the background color for the certificate photo

The first

After opening the picture, press CRTL+J to copy a layer, select the copy layer, click the background with the magic wand tool, press delete to delete the background, press CRTL+D to cancel the selection, click to create a new layer below, move the new layer below the copy layer, and change the foreground color to the desired color, Select the new layer and press ALT+delete to fill the color

The second

After opening the picture, press CRTL+J to copy a layer, select the copy layer, find the color range under the command of selecting the menu bar, and use the pipette tool to absorb the background color. You can change the absorption range by adjusting the color tolerance, press delete to delete, press CRTL+D to cancel the selection, click to create a new layer below, and move the new layer to the bottom of the copy layer

Change the foreground color to the desired color, select the new layer and press ALT+delete to fill the color, press CTRL+left mouse button to select two layers, right mouse button to select the merged layer, add a mask to the merged layer, change the foreground color to black, and select the brush tool to smear on the mask

The third

After opening the image, press CRTL+J to copy a layer, select the copy layer, find the replacement color in the adjustment under the image menu bar, use the pipette tool to absorb the background color, you can change the absorption range by adjusting the color tolerance, click the result to select the desired color to confirm, add a mask to the copy layer, and change the foreground color to black, Select the brush tool to smear on the mask