Radio receiving device and method for switching frequencies of radio stations

A radio frequency switching method, comprising:

• receiving radio information at a first frequency of a radio and playing the radio information;
• detecting a first signal strength of the radio information at the first frequency and determining whether the first signal strength is smaller than a default value;
• obtaining geographic location information through a positioning module and checking a radio network frequency list according to the geographic location information to obtain a second frequency of the radio corresponding to the geographic location information when the first signal strength is smaller than the default value, wherein the radio network frequency list comprises a plurality of radio names, a plurality of geographic areas respectively corresponding to the radio names, and a plurality of frequencies respectively corresponding to the radio names in the geographic areas;
• detecting a second signal strength of the radio information at the second frequency;
• and
• receiving the radio information at the second frequency of the radio and playing the radio information when the second signal strength is larger than the first signal strength.