The utility model provides a device for preventing sintering deposit is excessively cracked, belongs to sintering machine equipment technical field for when unloading, sintering pallet prevents that the sintering deposit is cracked. Its technical scheme is: fall the ore deposit trench between sintering machine tail platform truck and broken single roller, the lower part in luo kuang groove and walking track be sliding fit, and subaerial in the walking track outside is fixed to the lower extreme of support, and the lead screw is adjusted in the upper end installation of support, and the front end of regulation lead screw is connected with the luokuang groove. The utility model discloses be located between sintering machine tail platform truck and the broken single roller, the landing was to between broken single roller and the grid section again after the ore deposit inslot was fallen to the tail sintering deposit, and messenger's sintering deposit obtains the buffering when the whereabouts, reduced the falling speed of sintering deposit, and to have alleviateed the sintering deposit cracked by a wide margin. Simultaneously, to the impact of single roller when having reduced the sintering deposit whereabouts, the life of single roller has been prolonged. The utility model discloses simple structure, convenient to use can effectively improve the sintering deposit grade and constitute and strengthened the protection to single roller, have apparent economic benefits.