An electric quick action wrench with settable torque, which is optionally operated in an electric mode and a manual mode by a user, the electric quick action wrench comprising: a main body comprising a head portion , a handle portion , and a connection portion connected between the head portion and the handle portion ; a controller disposed in the main body and applied for setting a threshold torque value; a power device disposed in the handle portion and electrically connected with the controller , the power device comprising a power supply disposed in the handle portion , a motor electrically connected with the power supply , and a switch operable by the user; a driving device disposed in the main body , with one end of the driving device connected with the power device for being driven by the motor , and an end of the driving device away from the power device applied for being connected with a fastener; characterized by a torque sensing device disposed in the main body and electrically connected with the controller , the torque sensing device applied for detecting a manually output torque when the electric quick action wrench is operated in the manual mode; and a clutch device disposed in the main body and arranged in the driving device , the clutch device having a clutch torque and switchable between a meshing state and a semi-clutch state, wherein, in the electric mode, when a resistance confronted by the fastener exceeds the clutch torque, the clutch device automatically enters the semi-clutch state, and the user is notified by a notification emitted by the clutch device and aware of that the wrench shall be changed to the manual mode; in the manual mode, when a value of the manually output torque reaches the threshold torque value, the controller restarts the power device to operate, and the clutch device enters the semi-clutch state again; at this time, the user is notified by a notification emitted by the clutch device and aware of that the fastener reaches a required screwing torque. a main body comprising a head portion , a handle portion , and a connection portion connected between the head portion and the handle portion ; a controller disposed in the main body and applied for setting a threshold torque value; a power device disposed in the handle portion and electrically connected with the controller , the power device comprising a power supply disposed in the handle portion , a motor electrically connected with the power supply , and a switch operable by the user; a driving device disposed in the main body , with one end of the driving device connected with the power device for being driven by the motor , and an end of the driving device away from the power device applied for being connected with a fastener; characterized by a torque sensing device disposed in the main body and electrically connected with the controller , the torque sensing device applied for detecting a manually output torque when the electric quick action wrench is operated in the manual mode; and a clutch device disposed in the main body and arranged in the driving device , the clutch device having a clutch torque and switchable between a meshing state and a semi-clutch state, wherein, in the electric mode, when a resistance confronted by the fastener exceeds the clutch torque, the clutch device automatically enters the semi-clutch state, and the user is notified by a notification emitted by the clutch device and aware of that the wrench shall be changed to the manual mode; in the manual mode, when a value of the manually output torque reaches the threshold torque value, the controller restarts the power device to operate, and the clutch device enters the semi-clutch state again; at this time, the user is notified by a notification emitted by the clutch device and aware of that the fastener reaches a required screwing torque. <EOS>