A new quantum private comparison (QPC) protocol using Bell states and Bell entanglement swapping was proposed and analyzed. In the proposed protocol, Bell states were used as the quantum resources, and further Bell measurements and entanglement swapping were performed as the main operations for dealing with the private comparison of equal information without revealing their information content. The third part(TP) prepares Bell states and decoy photons, then inserts the decoy photons to sequences which he want to send to users for security. Users don’t need to carry out any local unitary operations and only need to perform Bell measurements, then they send their sequences after coding their private information respectively. TP can achieve the comparison of two bits of classical information by simple calculation. Finally, TP announced the result of the comparison. In addition, the correctness and security of our protocol were discussed.