Abstract:n order to further improve the performance of inkjet printing equipment, study of the ink supply system is carried out. Based on the analysis of the function demand of an ink supply system, the design of ink path, liquid path and gas path of ink supply system was put forward. And then respectively, from the hardware and software point of view, detail discussion was provided for a constant temperature and constant pressure at the same time with cleaning, ink jet and other additional functions of the ink supply system as an electromechanical fluid and gas integration solution. Finally, the effectiveness of the system was verified by experiments. At present, the ink supply system has been put into use in some inkjet printing equipment, and taken a satisfactory control effect.