In order to extend the frequency range of optoelectronic oscillator (OEO),a nove l frequency-doubling optoelectronic oscillator (FD-OEO) based on carrier phase -shifted system is proposed and experimentally demonstrated.In the proposed system,the phase modulator (PM) and a Mach-Zehnder modulator (MZM) operate in parallel,which implements a carrier phase-shifted double sideband (C PS-DSB) modulation to generate a microwave signal at the second-harmonic frequency via photodetector (PD).Meanwh ile,the chirped fiber Bragg grating (CFBG) ensures the oscillation of the fundamental frequency signal by rotating the phase between th e optical sidebands and the carrier. The proposed OEO is experimentally demonstrated.A self-starting microwave sign al at 2.23GHz and a frequency-doubling microwave signal at 4.30GHz are simultaneously generated.M oreover,the phase noises and the long-term stability of the generated microwave signals are also investigate d.The phase noises of the generated frequency-doubling microwave signal at 4.30GHz and the fundamental frequency m icrowave signal at 2.23GHz are －101.58dBc/Hz at 100kHz and －107.87dBc/Hz at 100kHz,respectively.The f requency drift and the power drift are approximately 3kHz and 1dBm over 12min,respectively,and no signif icant mode hopping is observed over a longer period of time.