The invention discloses a relay. The relay comprises a housing, a static contact bridge, a moving contact bridge, a push mechanism and a detection assembly; the static contact bridge is arranged on the housing; the moving contact bridge is between a conducting position where the moving contact bridge is conducted with the static contact bridge and a disconnection position where the moving contact bridge is disconnected from the static contact bridge and the moving contact bridge is movably arranged inside the housing; the push mechanism is connected to the moving contact bridge for pushing the moving contact bridge to move between the conducting position and the disconnection position; the detection assembly comprises an auxiliary moving contact bridge and an auxiliary static contact bridge; the auxiliary moving contact bridge is connected to the push mechanism; the auxiliary static contact bridge is arranged on the housing; when the moving contact bridge is in the conducting position, the auxiliary moving contact bridge is conducted with the auxiliary static contact bridge; when the moving contact bridge is in the disconnection position, the auxiliary moving contact bridge is disconnected from the auxiliary static contact bridge; and a blocking wall is arranged between the static contact bridge and the auxiliary static contact bridge. According to the relay of the invention, the detection assembly can quickly detect a non-conducting condition or a connection failure between the moving contact bridge and the static contact bridge on a circuit where the relay is positioned and can provide feedbacks timely, which can improve working reliability and safety of the relay.