The utility model discloses an on -vehicle broadcasting audience rating monitoring devices, including main body cover with embed PCB board in main body cover, main body cover includes first casing andsecond casing, first casing and second casing block are connected, and the junction that lies in first casing and second casing is provided with the buffering packing ring, the bottom of first casingand second casing all is provided with the buffering support, the PCB board is installed through four fixed columns in the inside of second casing, the integration has audio acquisition module on thePCB board, FM receiving module, little the control unit MCU, wireless transmission module and GPS module. The utility model discloses the precision that can improve the collection of wireless broadcast audience rating satisfies market and to objective, scientific, accurate audience rating data demand, except being used for measuring the audience rating, can compromising simultaneously and measurethe coverage rate of listening to with ageing, and a certain broadcasting is fallen to the ground in the somewhere, and radio station, unit of operation, advertiser know about the demand of this broadcasting at the coverage condition in somewhere.