The utility model discloses an ignition oil gun head with a blockage clearing device. The ignition oil gun head comprises a slag intercepting disc, slag pushing rods are uniformly distributed on the plate surface of the first push plate adjacent to the slag intercepting disc; the slag pushing rod penetrates through the oil passing hole in a sliding manner; a connecting rod is arranged at the top end of the slag pushing rod. The slag intercepting disc has the advantages that in the normal operation process, the spring is stressed and compressed, the connecting rod is arranged in the oil passinghole of the slag intercepting disc, and fuel oil sequentially passes through the gap between the oil passing hole and the connecting rod and the oil passing hole in the first push plate and then is sprayed out after passing through the flow dividing piece and the rotational flow piece; when the gap between the oil passing hole and the connecting rod is blocked by the oil residues; when the ignition oil gun is blocked, only fuel oil with certain pressure needs to be stopped from being supplied into the ignition oil gun, at the moment, the spring pushes the first push plate to slide towards theslag stopping disc, meanwhile, the slag pushing rod is inserted into the oil passing hole and ejects out oil slag, and therefore the blockage removing function is achieved, the gun head does not needto be detached, operation is easy, the cleaning period is short, efficiency is high, and manpower and material resources are reduced.