What you want to ask is the method of replacing excel signature pictures in batches? The method is as follows:

1. Prepare all the signature pictures that need to be replaced and save them in the same folder.

2. Open the Excel file, enter the "Development Tools" tab, and click "VisualBasic" for macro programming.

3. In the VBA editor, select the worksheet that needs to process pictures, then select references in the tools menu and select MicrosoftScriptingRuntime.

4. In the code editor window, enter the code to replace the image path. SFolderPath in the replacement code is the full path of the folder where the picture is located.

5. Press F5 or click Run to execute the macro.