Aiming at the problem of free-space optical（FSO） link line-of-sight constraint, this paper proposes an optical intelligent reflective surface（OIRS）-assisted hybrid FSO/radio frequency（RF） system, introduces the system model. OIRS is used to solve the obstacle occlusion problem, its auxiliary FSO link obeying the Malaga distribution under geometric and jitter errors, the RF link obeying the Nakagami-m distribution with arbitrary correlation and using equal-gain combined reception technique at the destination node. The closed-form expressions for the outage probability and average bit error rate of the hybrid FSO/RF system are derived, and asymptotic analysis of the outage probability is performed. The simulation results show that the interrupt and bit error performance of the OIRS-assisted hybrid FSO/RF system depends on the one channel with worse quality, and the bit error performance of the binary phase-shift keying modulation is better than the binary frequency-shift keying modulation.