The invention relates to a plant cell culture technology, in particular to a method for biosynthesizing abietane diterpenoid compounds by using cephalotaxus fortune culture cells. The method comprises the following steps of: placing cephalotaxus fortune cells in a common culture medium, and culturing, wherein50 to 150g of the cells are inoculated in each liter of wet weight of the culture medium; and adding an inducer at the final concentration of 10 to 2,000 mu M and 50 to 200g of adsorbent into each liter of culture medium at the initial stage of cell exponential growth, wherein the inducer is an abiological inducer or fungal elicitor. The method is a biosynthesis method and is stable and environment-friendly; and products are completely adsorbed onto the adsorbent, so that the operation process of separation and purification is greatly simplified, the cost is reduced and industrial production is easy to realize. Meanwhile, seven abietane diterpenoid compounds comprising a new compound are synthesized. The abietane diterpenoid compounds have high bioactivity, and are important lead compounds, and the technology has important commercial application prospect.