The invention discloses a high-compatible electronic document conversion method adopting multiple conversion technologies. The method comprises the following steps: uploading a document file to a fileserver and notifying a conversion server of the document file that needs to be converted; acquiring file content and judging whether the document includes a special formula generated by the Microsoftformula editor by the document conversion server; If the special formula is not included, calling an Open Office conversion service on a Linux server to carry out conversion, saving the conversion result to the file server, and ending the processing flow; if the special formula is included, calling an MS Office conversion service on a Windows server to carry out conversion, saving the conversionresult to the file server, and ending the processing flow. By adopting the multiple conversion technologies, an ActiveX control does not need to be downloaded and installed or Office software does notneed to be installed, and colorful and diverse educational resources such as teaching plans, teaching materials, materials and courseware can be directly and smoothly opened, displayed and played onweb pages, so the method is efficient, stable and strong in compatibility.