The invention discloses a coil lead structure for increasing a wiring electrical distance. The coil lead structure for increasing the wiring electrical distance comprises an A phase coil, a B phase coil and a C phase coil, wherein an X connection wire is led out of the bottom of a high voltage side of the A phase coil, a Y connection wire and a Y' connection wire are respectively led out of the bottom of a high voltage side of the B phase coil, a Z connection wire is led out of the bottom of a high voltage side of the C phase coil, the X connection wire is connected with the Y connection wire, and the Y' connection wire is connected with the Z connection wire. The coil lead structure for increasing the wiring electrical distance uses the design that lead heads of the B phase coil are respectively used as the Y connection wire and the Y' connection wire, and thereby achieves the purpose that a connection between the X connection wire and the Z connection wire are not achieved through the B phase coil when Yyn0 is wired, and further can achieve the purpose that the size of an oil tank does not need to be increased on the premise of guaranteeing an insulation distance. Additionally, the branch connection wires of the B phase coil and the C phase coil are led from the high voltage sides, the branch connection wire of the A phase coil is led from a low voltage side of the A phase coil, and therefore the enough insulation distance among the branch connection wires is guaranteed on the premise that the number of lead heads of the branch connection wires is large.