The invention discloses a detection coil and a wireless charging guiding rail adopting the same. The coil is in the shape of an Arabic number '8' wound by a guiding wire, one end of the guiding wire firstly winds outwards to form a left side coil, the guiding wire extends to the right side when reaching the middle of the outermost turn and winds to form a right side coil in the opposite directionfrom outside to inside, the other end of the guiding wire extends outwards from the interior of the right side coil, the turns of the left and right side coils are the same, and the sizes adapt to each other. The guiding rail comprises an energy transmission coil and the detection coil, a signal of the detection coil is received by a control circuit to judge whether there exist loads, and therefore the connecting and disconnecting of the energy transmission coil can be controlled. The detection coil has the significant effect that the problem of easy interference on the detection coil at a traditional circular or rectangular position in a strong magnetic field environment is solved, the rapid and accurate positioning of an electric vehicle in the wireless charging system driving process isachieved, and the dynamic control of the connecting and disconnecting of the transmission coil is further achieved.