The invention discloses a method utilizing thick oil primary metalloporphyrin to catalyze polycyclic aromatic hydrocarbon. After polycyclic aromatic hydrocarbon and metal porphyrin compound/heavy oil primary metalloporphyrin are mixed evenly, a sulfur promoter is added, reaction is performed under the condition of hydrogen presence for a certain time, and a product is completely washed out with dichloromethane. The metalloporphyrin can be activated into a substance having catalytic hydrogenation activity by adopting the method, hydrogenation of the polycyclic aromatic hydrocarbon can be promoted under the modification condition of hydrogen presence, and the method has the important significance on improvement of a thick oil hydrogen presence modification condition effect by utilizing the thick oil primary metalloporphyrin compound, is simple, short in reaction time, mild in reaction condition and easy to control and does not need complicated expensive equipment.