Abstract: Electric pruning shears equipped with a trigger provided where the trigger could operate a motor assembly by detecting magnetic polarity with a polarity detecting sensor, transmitting an operating signal in accordance with the polarity to the control assembly, determining whether the corresponding signal is in the reverse or forward direction, and transmitting the determined reverse driving signal or forward driving signal to the motor assembly to operate a motor, and also the trigger allows a movable blade to stop at a desired position on a branch while pruning fruit trees by stopping the operation of the motor if the polarity detecting sensor realizes the magnetic center.