对光电探测放大器的复杂噪声特性进行了分析，研究了光电探测放大器的反馈电阻噪声、输入端电压噪声及电流噪声的特性。通过对放大电路波特图及电压噪声频谱特性的分析，得出输出电压噪声的计算方法。结合具体电路，通过计算电流、电阻及电压噪声，总结出减少光电探测电路噪声的设计原则。

The complex noise features of the opto-electronic detection amplifier are analyzed. The characteristics of the feedback resistance noise, input voltage noise and current noise from the opto-electronic detection amplifier are studied. The calculation method of the output voltage noise is obtained by analyzing the bode diagram of the amplifier circuit and spectrum characteristic. Combining the specific circuit, the principle of the low noise opto-electronic detection circuit is summarized by calculating the current, resistance and voltage noise.