The objective of this paper is to study the reaction mechanism of carbohydrate and its hydrolyste as a Chemical additive in wood-based particleboard 1. Through different thermal analysis and thermal degradation analsis, the experiment showed a good results by the variable ranges of pressing time and pressing temperature; 2. the boiling water resistance property of board can be raised by using carbohydrate as chemical additive and NH ,4,NO,3, or ZnCl,2, as catalytic agent; 3. the examination showed that the board properties by adding NH,4,NO,3, is better than ZnCl,2,.