Vehicle passenger detection apparatus

A vehicle passenger detection apparatus includes load detecting means (11) and seat condition determining means (12). The seat condition determining means (12) includes vibration threshold value setting means (15), vibration determining means (16) and seat determining means (17). The vibration threshold value setting means (15) sets a vibration threshold value based on the load detection signal such that the vibration threshold value is higher when a fluctuation amount of the load detection signal is small than when the fluctuation amount of the load detection signal is large. The seat determining means (17) executes a seating determination based on the load detection signal when the vibration determining means (16) determines that the vehicle vibration is not occurring based on the load detection signal and the vibration threshold value, and to defer execution of the seating determination to maintain a previous seating determination result when the vibration determining means (16) determines that the vehicle vibration is occurring.