The invention relates to a combination method of hydrogenation disposal and catalytic cracking used for heavy distillate oil. Under the hydrogenation disposal condition, the heavy distillate oil is used as raw material oil, and the raw material oil and hydrogen are mixed and pass by a first hydrogenation disposal reaction area, thus generating oil by hydrogenation disposal; the oil is separated to obtain the gas which is then desulfurized; the gained liquid is mixed with hydrogen desulfurized and pressurized by a circular hydrogen compressor and then passes by a second hydrogenation disposal reaction area, thus generating the oil by the hydrogenation disposal; the oil is separated to gain the gas which enters the first hydrogenation disposal reaction area directly; and the gained liquid is fractionated in a fractionating tower to gain the low-sulfur light oil product and heavy oil product. The heavy oil product can be independently catalytically cracked or mixed with other heavy raw material oils and then catalytically cracked, thus obtaining various light oil products and circular oil; and the circular oil can be circulated and returned to the catalytic cracking process and also can enter the hydrogenation disposal process. Compared with the prior art, the method effectively improves the hydrogenation disposal depth of the raw material oil, needs only one circular hydrogenation system for two hydrogenation disposal reaction areas, has low investment of equipment, low operation expense, and can directly produce clean gasoline and diesel.