The invention discloses appearance size design of a refractory brick for a novel dry cement kiln. The appearance size design of the refractory brick for the novel dry cement kiln is characterized in that the refractory brick for a cement rotary kiln comprises a standard building brick and a gap-locking brick; in the standard building brick, the big head size is between 81 mm and 85 mm, the small head size is between 72 mm and 76 mm, the height size is between 180 mm and 250 mm, and the length size is 198 mm; and in the gap-locking brick, the big head size is between 81 mm and 85 mm, the smallhead size is between 72 mm and 76 mm, the height size is between 180 mm and 250 mm, and the length size is between 198 mm. The appearance size design of the refractory brick for the novel dry cement kiln has the following beneficial effects: the appearance size standard of the refractory bricks at home and aboard is unified; the problem that disproportion is easily caused in the alkaline brick construction is reduced; and the problem that the non-alkaline brick is heavy and high in construction difficulty is solved.