The invention discloses an accurate NC55 tobacco variety bulk curing process. According to the change characteristics of the appearance trait and inherent physiology and biochemistry of tobacco in the process of curing and in combination with the operation of the automatic control equipment of an intensive curing barn, bulk curing is divided into a tobacco yellowing stage, a tobacco wilting stage, a tobacco vein yellowing stage, a tobacco drying stage and a tobacco vein drying stage. The tobacco yellowing stage includes three temperature-increasing and temperature-keeping processes, each of the other stages includes a temperature-increasing and temperature-keeping process, seven steps corresponding to dry and wet bulb temperatures and the change in tobacco are formed, the dry and wet bulb temperatures need to strictly correspond to the change indexes of the tobacco, the temperature-keeping time is flexibly regulated in order to reach the change indexes of the tobacco, and the power of fire and the rotational speed of a fan are controlled according to the dry and wet bulb temperatures set by a temperature-humidity controller. The tobacco yellowing stage of the accurate NC55 tobacco variety bulk curing process adopts step-by-step temperature rise for yellowing, which accords with the physiological and biochemical change principle of tobacco curing, consequently, the maturity of cured tobacco can be effectively increased, the tobacco cannot be easily cured to turn green, and is rich in oil, aroma is remarkably increased, and the quality of tobacco is good.