The utility model provides a methanol engine spark plug, and relates to the technical field of engines. The utility model discloses a methanol engine spark plug. The device sequentially comprises a wiring rod, a metal rod and a central electrode located at one end of the metal rod, a shell is arranged at the periphery of the metal rod; an ignition shell is arranged at the position close to the center electrode, the ignition shell is connected with the shell so that the center electrode can be wrapped in the shell and the ignition shell, a first through hole is formed in the position, located at the center line of the center electrode, of the ignition shell, and a gap is formed between the periphery of the first through hole and the center electrode so that gas passing through the gap can generate electric sparks. A structure similar to a pre-combustion chamber type spark plug is formed between the ignition shell and the ceramic protective layer of the spark plug, falling of the ceramicbody caused by cold and hot impact is effectively reduced, the whole spark plug is simple in structure and convenient to machine, and the cost and the product size are effectively reduced. The sparkplug has no side electrode, so that the reliability and durability of the spark plug are greatly improved.