Abstract: Using a 2 kg experimental coke oven, the coking processes from wet coal and from dried coal were investigated contrastively including the characteristics of the products, coke quality and composition of tar and gas, where the moisture of wet coal is 10%. The results showed the higher stack density of dried coal and the following characteristics of the coke with dried coal as raw material. The output and the receivable basic yields increased with water content decreased, but, in view of the drying-based yield, the coke and tar increased while the gas decreased. The pore volume of coke decreases with its strength index improved obviously, and the aryl organic compound in tar increased with alkene decreased. And in the gas H2 increased with CH4 decreased.