A foot operated controlling device comprises an oriental base, a pedal, a sensing module and a transmission mechanism. The pedal is connected to the oriental base and tiltable relative to the oriental base. The sensing module comprises a first sensor and a second sensor. The transmission mechanism is connected to the pedal and the sensing module. The transmission mechanism comprises a transmission rod and a swing rod. The transmission rod is connected to the pedal. The swing rod is connected to the transmission rod, and an extension direction along which the swing rod is oriented is independent of an extension direction along which the transmission rod is oriented.