Abstract: The present invention discloses a wireless telemetry device for collecting wheel-rail force signals, comprising: a wireless telemetry module, a power supply module, a signal transmission module and a controller. The wireless telemetry module is installed on a wheel axle of a train; a power supply output induction module is installed on a bogie of the train; a power supply receiving induction coil is installed on the wheel axle and electrically connected with the wireless telemetry module; a signal receiving induction module is installed on the bogie of the train; a signal output induction coil is installed on the wheel axle; the controller is installed on the bogie of the train; and the controller realizes signal connection with the signal receiving induction module. In the present invention, the wireless telemetry module and the controller can realize non-contact power transmission and signal transmission.