The invention relates to an offset printing process of a fine corrugated board. An offset printing technique of the fine corrugated board is achieved after the steps that a direct offset printing technique is adopted, proper oil ink, the corrugated board and a rubber blanket are selected, strength of the corrugated board after printing and the reoccurrence rate of screen dots are tested, trial printing is carried out, and a scheme is improved. The corrugated board is a coated grey white cardboard whose facial tissue is 250 g, core paper and liner paper are cardboard paper of 175 g, the moisture content is controlled to range from 8% to 10%, the strength of the corrugated board is reduced to be within 5%, and the reoccurrence rate of the printing screen dots is controlled to be more than 95%. Due to the fact that existing production equipment and cost are made good use of, the existing equipment is improved, good mechanical strength and printing effect are achieved, and the fine corrugated board has better elasticity and anti-seismic and vibration absorption performance than card paper and has the advantages of being lower in weight, lower in transportation cost, lower in application cost, more environmentally friendly and the like.