Abstract: An ink cartridge refill apparatus includes an ink cartridge holder and an ink refill unit which are matched with each other. The ink cartridge holder has an accommodation chamber therein to accommodate an ink cartridge. The ink refill unit includes an ink tank and an ink delivery unit. An air extraction mechanism is provided on the ink cartridge holder to extract air from the ink cartridge. The ink cartridge holder has a passage for the air extraction mechanism to extract air relative to a nozzle of the ink cartridge. Through the air extraction mechanism, the ink cartridge is primed after being filled with ink, so that ink can freely flow to the nozzle of the ink cartridge from the ink tank of the ink cartridge. Compared to the prior art ink cartridge refill apparatus which needs an auxiliary tool to extract air after being refilled, the present invention is convenient for operation and can prevent the ink cartridge from leaking.