Because Bell state Measurement is the prerequisite for quantum information processing, a non-destructive measurement scheme for Bell state is proposed. In this scheme, the parity gates are introduced as key components, and C-NOT gates and Toffoli gates are implemented using the property that parity gates do not change the states of the input photons. Then, Toffoli gates combined with Hadamard gates are used to measure the 4 Bell states deterministically. The proposed scheme can be used to measure two-photon entangled states and extended to the application scenarios of three-photon entangled state, providing a new idea for Bell state measurement and quantum information processing.