Time course monitoring of FCW/DCW ratio, production of intra and extracellular protein, and peroxidase activity were performed during suspension culture of Taxus chinensis cells. The observed FCW/DCW ratio was 12 at day 14, which was the lowest value during cultivation, and the specific protein production, based on dry cell weight, was also the lowest at day 14, which showed 4.3 mg/g DCW. The pattern of POD activity was similar to that of protein production. The results in this report were obtained using actively growing cells in flasks, therefore it is possible to use those results to control the process and indicate the stresses imposed on cells during large-scale cultivation.