The invention discloses a voltage regulator. The voltage regulator comprises a feedback adjusting loop and a driving transistor, and the drive transistor is configured to initiate a current for adjusted output. A transient recovery circuit is coupled to a voltage regulator circuit, and comprises a first transistor which is coupled to initiate a current for a control terminal of the driving transistor, wherein the initiated current is a current except currents initiated for responding to the feedback adjusting loop. The first transistor is selectively started to respond to reduction of the voltage at the adjusted output. The transient recovery circuit further comprises a second transistor which is coupled with an absorbing current from the adjusted output. The absorbing current has a firstnon-zero value in the static operation mode of the regulator circuit. The second transistor is modified to increase the absorbing current to a larger second non-zero value to respond to increase of the voltage at the adjusted output.