The invention relates to a method for humidifying and drying coking coal in a coke oven and equipment special for the method. The method comprises the following steps of: measuring and analyzing wet coal, rotating and drying the wet coal by using a steam pipe, preheating carrier gas, treating tail gas, recovering steam condensate, performing nitrogen and steam safety protection and performing moisture control during drying the wet coal. The method for humidifying and drying the coking coal in the coke oven by a steam pipe rotary dryer can improve the coke oven productivity, improve the coke oven production capacity by about 11 percent, improve the yield of coke oven gas by about 8 percent, save the energy of the coke oven by about 14 percent, and obviously improve the coke quality.