In order to reduce the PeaktoAverage Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM), a restorable Clipping scheme is proposed and used in the OFDM and Radio Over Fiber (OFDMROF) system. The algorithm is to set a peak detection threshold on the input signals and the signals can be recorded in an array, at the receiving end, the original siginal can be restored in the array effectively. Simulation results show that the new scheme is not only simple, but also significantly improve the BER and the outofband radiation performance while guaranteeing the PAPR performance of the QAMOFDM system.