The utility model overcomes it is not enough that prior art exists, provides a 10kV switch handcart withstand voltage test special joint, can not only be inseparable with plum blossom male contact, to have solved moreover because of the uneven accident of discharging that produces of wire winding, and the probability that personnel's electric shock accidents takes place has been reduced to insulating sealing, in order to solve above -mentioned technical problem, the utility model discloses a technical scheme do: a 10kV switch handcart withstand voltage test special joint, includes that plug body holds with working a telephone switchboard, plug body is cylindric structure, and the one end end does the circular arc and handle, and the other end is connected and is served in the wiring, plug body's the diameter and the plum blossom contact internal diameter phase -match of circuit breaker can match and peg graft at the plum blossom contact, the wiring end is square structure, the both ends of wiring end are provided with two wiring holes at least, and three special joint cooperates the use together when just using, connects through the insulating copper conductor of transparent each other, the utility model discloses but wide application in withstand voltage test field.