The invention provides an overload heating and shunting device for a tension yoke plate and belongs to the technical field of power maintenance. The overload heating and shunting device includes a first clamping portion and a second clamping portion, a shunt line is disposed between the first clamping portion and the second clamping portion, the first clamping portion is matched with a first insulating operating rod, and the second clamping portion is matched with a second insulating operating rod. Through the matching of the first insulating operating rod and the first clamping portion, a wire at the end of a tension connection pipe is clamped; through the matching of the second insulating operating rod and the second clamping portion, a wire at the end of a wiring terminal is clamped; the connection between the wire at the end of the tension connection pipe and the wire at the end of the wiring terminal is achieved through the shunt line between the first clamping portion and the second clamping portion, the contact area of the tension yoke plate is effectively increased, a current passing through the tension yoke plate is reduced, the load of the tension yoke plate is effectively reduced, and the high temperature of the tension yoke plate can be reduced by 70%. By utilization of the overload heating and shunting device, the transition of the overheating defect of the tensionyoke plate is performed without affecting the line load and without changing a power grid operation mode, and the planning and timeliness of the overhaul are strengthened.