The influence of some chemical impregnating such as polyphosphate urea, ZnCl 2 , AlCl 3 , FeCl 3 , H 2 NaPO 4 , H 3 PO 4 on the carbonization process of viscose fiber cloth at the temperature range from 30 to 700 0 C was studied in detail. By the thermalgravimetric analysis, the obtained results have showed that the presence of these chemical impreganating agents caused lowering the activation energy and increasing the carbonization viscose mass left at 700 0 C. The polyphosphate urea was proven to be a good chemical agent for the carbonization process.