The utility model provides a 46 needle and general mechanical characteristic appearance of 58 needle handcart switches, it includes the box, insert the 58 needle aviation socket of complex that peg graft mutually with 58 needle aviations of handcart switch, it is connected with the box through first test wire, the crossover sub, it includes that 58 needle aviations insert, second test wire and 46needle aviation socket, second test wire both ends connect respectively 58 needle aviations insert with 46 needle aviation socket, the cooperation of pegging graft mutually 58 needle aviation socket with the characteristic appearance is inserted in the 58 needle aviations of this crossover sub, the 46 needle aviation socket of this crossover sub and 46 needle aviations of handcart switch are inserted and are cooperated grafting mutually. Freely switching of 46 needles or 58 needle handcart switches has been realized to this characteristic appearance, has saved the trouble of seeking position of inserting needle.