The bandwidth and spurious-free dynamic range (SFDR) of the microwave photonic link can be improved by suppressing the nonlinear distortion factor in the microwave photonic link. A linearization scheme based on double-electrode Mach-Zehnder modulator and balanced detection is proposed. This scheme combines phase control, optimized bias voltage, and balanced detection techniques. Theoretical analysis results show that the proposed system can eliminate second-order harmonic distortion(HD2), as well as suppress third-order inter-modulation distortion(IMD3) and fifth-order inter-modulation distortion(IMD5). Simulation analysis carried out on OptiSystem programming environment shows that the second-order inter-modulation distortion and HD2 are completely eliminated, and IMD3 and IMD5 are mainly suppressed under the background noise. Among them,the IMD3 is suppressed by about 45.76 dB, the third-order SFDR reaches 114 dB·Hz ^2/3, and the fifth-order SFDR reaches 137.97 dB·Hz ^4/5.