<P><I>De novo</I> biosynthesis of high-value added food additive <I>p</I>-coumaric acid (<I>p</I>-CA) direct from cellulose/hemicellulose is a more sustainable route compared to the chemical route, considering the abundant cellulose/hemicellulose resources. In this study, a novel factory was constructed for the production of <I>p</I>-CA in <I>Yarrowia lipolytica</I> using cellulose/hemicellulose as the sole carbon source. Based on multicopy integration of the <I>TAL</I> gene and reprogramming the shikimic acid pathway, the engineered strain produced 1035.5 ± 67.8 mg/L <I>p</I>-CA using glucose as a carbon source. The strains with overexpression of cellulases and hemicellulases produced 84.3 ± 2.4 and 65.3 ± 4.6 mg/L <I>p</I>-CA, using cellulose (carboxymethyl-cellulose) or hemicellulose (xylan from bagasse) as the carbon source, respectively. This research demonstrated the feasibility of conversion of cost-effective cellulose/hemicellulose into a value-added product and provided a sustainable cellulolytic cell factory for the utilization of cellulose/hemicellulose.</P><BR>[FIG OMISSION]</BR>