Embodiments of the present disclosure provide an IM system and method. The method includes: receiving and storing a request message from a browser device, which comprises a browser device ID and a media information ID, configuring a request message ID for the request message, recording a first corresponding relationship between the browser device ID, the media information ID and the request message ID; receiving a request message request from a media information pushing device, finding the request message according to the media information ID in the request message request, sending the request message to the media information pushing device; receiving and storing a feedback message obtained by the media information pushing device according to the request message, recording a second corresponding relationship between a feedback message ID and the request message ID; receiving a feedback message request from the browser device, finding the feedback message according to the browser device ID and sending the feedback message to the browser device.