A method and a system for radio network environment detection and reporting in a network handover and a media independent handover (MIH) apparatus are provided. The method includes the following: an MIH function (MIHF) at a terminal side initiates a network scan, and generates a parameter report on a radio network environment around the terminal including dynamic information and static information of a scanned point of access (PoA) after the scan is completed; the MIHF at the terminal side sends the parameter report on the radio network environment to an upper layer at the terminal side or to an MIHF at a network side. The method and system support homogeneous and heterogeneous network environments at the same time.