The invention relates to the technical field of electrical safety, in particular to a leakage current protector, comprising an input terminal, an output terminal, a tripping mechanism, an impact mechanism and a current detecting mechanism for detecting the current condition of a loop formed by the input terminal and the output terminal; The tripping mechanism comprises a circuit board, a movable frame, a first driving elastic member for driving the movable frame to move and a card member for restricting the movement of the movable frame. The circuit board is provided with a fixed contact pointand the movable contact point for contacting with the fixed contact point is movably erected. The striking mechanism comprises a striking hammer for driving the movement of the card member, a fixingmember, an armature hinged with the fixing member, a second driving elastic member connected with one end of the armature and an electromagnet connected with the other end of the armature, the electromagnet being electrically connected with the current detecting mechanism, and one end of the armature being used for striking the striking hammer. The invention can enhance the impact force of the tripping mechanism, and ensure that the tripping mechanism can be tripped stably, so that the leakage current protector can be cut off in time.