The utility model relates to a switch contact diverging device, including the water conservancy diversion spare that two water conservancy diversion anchor clamps and both ends are connected with the water conservancy diversion anchor clamps respectively, two water conservancy diversion anchor clamps all are equipped with the first chuck and the second chuck of relative up -down setting. The both ends at the switch contact are installed respectively to two water conservancy diversion anchor clamps to form parallel circuit at contact both ends through water conservancy diversion spare, share the electric current that flows through the contact, thereby play the effect that reduces the temperature rise, overhaul the in -process and need not decrease of load and power failure, enhancing power supply reliability.