The invention relates to an online collaborative file processing method and device, electronic equipment and a server. The method comprises: loading a webpage of an online processing file and a to-be-processed file; receiving a first processing instruction input by a user; sending a first cooperative processing message to the server, wherein the first cooperative processing message carries information of the to-be-processed file and a first processing instruction; receiving a second cooperative processing message sent by the server, wherein the second cooperative processing message carries user information for accessing the to-be-processed file and a second processing instruction corresponding to each piece of user information; and processing the to-be-processed file based on the first processing instruction and the second processing instruction. By receiving the processing instruction input by the local user and the processing instruction input by the remote user and sent by the server, and sending the processing instruction input by the local user to the server, the server can send the instruction to the remote user, online multi-user cooperative file processing is realized, andthe file processing efficiency is improved.