The invention relates to a rear-wearing type bone conduction headset with heart rate measurement and step counting functions. The rear-wearing type bone conduction headset comprises a supporting frame, bone conduction sounders, an optical heart rate sensor and a pedometer. The supporting frame is equipped with a U-shaped supporting frame body wound behind a brain, arched ear hook parts formed at two sides of the U-shaped supporting frame body, and mounting end parts set at front ends of the ear hook parts. The bone conduction sounders stretch out from openings on the front cover surfaces of the mounting end parts. The optical heart rate sensor is set on the front cover surface of one mounting end part at the end away from one ear hook part relative to a round opening. The front end face ofthe optical heart rate sensor and the front end face of one bone conduction sounder are set in a coplanar mode. The pedometer is set on the front cover surface of one mounting end part at the end close to one ear hook part relative to the round opening. The front end face of the pedometer is lower than that of one bone conduction sounder. According to the rear-wearing type bone conduction headsetprovided by the invention, the music listening definition is high, a heart rate also can be measured accurately, and a step counting function is realized through the pedometer.