Embodiments of the present invention provide a radio resource optimizing method, apparatus, and system. The method includes: performing DPI on received network data, so as to identify a protocol type of the network data; if the network data is a first kind of data stream, identifying a heartbeat in the first kind of data stream, and obtaining heartbeat information of the heartbeat; when the heartbeat interval period of the heartbeat information is greater than a radio resource pre-allocated time slice, determining a radio resource bandwidth allocation parameter according to the heartbeat bandwidth requirement of the heartbeat information; and sending a radio resource allocation parameter including the radio resource bandwidth allocation parameter. In this way, the radio resource allocation parameter is dynamically set when an application runs in the background, thereby improving the utilization rate of an air interface bandwidth and time of a radio base station.