The phase noise of microwave receiver is modeled theoretically,and a novel microwave receiver based on optics technology is proposed in this paper.Microwave photonic link and opto-electron ic oscillator,replacing cable and electronic oscillator respectively,are integrated in this new receiver to achieve low phase noise.Ba sed on the above theoretical model,the superiority of this kind of receiver over the traditional electronic receiver in phase noise in dex is analyzed.Let the 10GHz carrier signal pass through both kinds of the electric and optics receivers respectively,and the me asured phase noise data of output signal are compared and analyzed.The experimental results show that the phase noise of the carrier signal is increased by 30dB at 1kHz frequency offset after receiving by the traditional electric receiver,but it is only 10dB for th e new optics receiver proposed in this paper.It is shown that the phase noise index is significantly improved after both microwave photonic li nk and opto-electronic oscillator being integrated in microwave receiver.