The invention discloses a delayed coking processing method of oil sand bitumen. The delayed coking processing method comprises the following steps: performing the primary coking reaction by adopting asphalt oil as a raw material, heating the asphalt oil to 495 to 550 DEG C, at the same time, performing the secondary coking reaction on a coked raw material except for the asphalt oil in a residue oil heating furnace, mixing products of the primary coking reaction and the secondary coking reaction, performing the tertiary coking reaction, generating light-weight products and coke, after a cokingreactor is fully filled with the coke, enabling the raw material of the tertiary coking reaction to enter another coking reactor, hydraulically decoking the coke remaining in the original coking reactor, and circularly utilizing the coke. By adopting the method, the corrosion of fine-sand-containing particles in the raw material for the delayed coking apparatus can be reduced, and the maintenancecost of the device can be decreased. Meanwhile, the asphalt heating temperature can be independently controlled, the coking trend of a heating furnace tube can be slowed down, and the yield of liquidproducts can be increased.