Widely used in printing paper books, newspaper printing fields. Inking system and dampening system are important parts of the web offset press. They directly determine the quality of printed products. The design of experiment platform based on web offset press with the characteristics of small offset press. This experiment platform can realize the emptying the basic function of the system. The inking system adopts continuous ink form; the dampening system adopts non-contact wetting form. According to the requirement of printing and printing technology, the design of Inking system and dampening system of web offset press has been completed. All complete 4 assembly drawings and 9 part drawings. The design principle of drawing done correctly, craft basic norms and meet the design requirements.