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.