The effect of anthraquinone (AQ) addition in kraft and soda pulping of bagasse has been studied in the laboratory. The results show that AQ addition by 0.05% in soda pulping increases the pulp yield by 2.5 per cent units compared to normal soda pulping. The yield increases by 4.5 per cent units by using 0.15% AQ. In kraft -AQ pulping, the gain in yield is less remarkable. The quality of the pulp improves by addition of AQ both in soda and kraft pulping.