Coking inhibitor and preparation method and application thereof

The invention discloses a agglomerating inhibiting agent, preparing method and application thereof. The agglomerating inhibiting agent is selected from one or more hydrogenizating upgrading products of hydrocarbon mixture of coal oil, ethylene tar oil, catalytic crackingre cycle stock, catalytic crackingre slurry oil, catalytic crackingre heavy oil, catalytic crackingre extract oil and coking hydrowax, which contain 65-100 wt% of cyclane and arene, boilingpoint is 150 DEG C to 500 DEG C. The agglomerating inhibiting agent is used for preventing, slowing and removing agglomerating of apparatus and pipilines in process of petroleum refining and petrochemical processing.