Ignition coil

The utility model provides an ignition coil which comprises a central magnetic core. A secondary coil and a primary coil are arranged on the circumference outside the central magnetic core in the radial direction from inside to outside in sequence; the secondary coil is coiled on a secondary spool; the primary coil is coiled on a primary spool to form a coil body; the coil body is laid in a casing; and paraffin for insulating is filled in the casing. The ignition coil has simple structure and reasonable design, and adopts paraffin for insulating to replace oil in the traditional technology, after paraffin is sealed, the paraffin is in the ignition coil in a solid mode, short circuit phenomenon caused by the vibration of vehicle during vehicle driving can not occur, oil leak is avoided, and the replacement rate is only 3 percent after the ignition coil is used for one year. A coil positioning piece is arranged on the primary spool, the primary coil and the secondary coil are positioned on the positioning piece