I tried the following methods. If there are particularly complicated pictures or symbols such as mathematics, it is not easy to transform. You try it:

Office2003 realized the conversion from PDF file to Word document.

After my own attempt, I found that I can use the Microsoft Office Document Imaging component in Office 2003 to realize the conversion from PDF to WORD, which means I can use WORD to complete this task. The method is as follows:

Open the PDF file to be converted with Adobe Reader, and then select File → Print menu. In the opened print window, set the name in the printer column to "Microsoft Office Document Image Writer", and confirm that the PDF file is output as a virtual print file in MDI format.

Note: If the item "Microsoft Office Document Image Writer" cannot be found, please use "Add/Remove Components" on the Office 2003 installation CD to update and install this component, and select "Microsoft Draw Converter for Office Tools".

Then, run "Microsoft Office Document Imaging" and use it to open the MDI file you just saved. Select the menu "Tools → Send Text to Word", and select "Keep the picture layout unchanged when outputting" in the pop-up window. After confirmation, the system will prompt "You must rerun OCR before performing this operation. This may take some time ",whatever it is, just confirm it.

Note: the recognition rate of PDF to DOC is not perfect. After conversion, the original typesetting format will be lost, and manual typesetting and proofreading are needed after conversion.

The above is only available in word2003, and there is no Microsoft Office document image writer in other versions.