That requires some PS skills. I usually use several Photoshop CS3 versions in repairing the toolbar, the seventh on the left toolbar. If the background area is small and the color is pure, use 【 Spot Repair Brush Tool 】, it will automatically sample near the mouse and replace the current texture with the texture of the sampling point. You need to customize the use of the Repair Brush Tool (click and hold the mouse to pop up the switching window), and hold down ALT. Click the normal texture with the mouse, and then the mouse will smear the previously selected texture where it needs to be replaced. It is similar to replacing the current Repair Tool, but another Stamp Imitation Tool can also be used, and the method is similar to the Repair Brush Tool. The difference is that the imitation stamp does not automatically blend into the surrounding environment. I don't know if it's clear. If you still don't know, find a book. There will be basic courses.