Provided is a switching regulator for achieving asymmetric feedback amplification. A switching regulator network receives an input voltage in an opened mode and provides a stable constant output supply voltage. The switching regulator for achieving the asymmetric feedback amplification comprises a PWM switching circuit, and the PWM switching circuit responses to a feedback error signal to regulate the output voltage. A transconductance error amplifier generates an error feedback signal, and the error feedback signal is proportional to the difference between a reference input voltage and the output voltage. The overshoot of the output supply voltage provides a negative conversion rate current which is higher than a positive conversion rate current by adding the transconductance error amplifier. Thus, extra pins or parts of an integrated circuit are not needed.