Disclosure relates to an ink storage apparatus with a rotating type ink storage pouch. The ink storage apparatus storing ink to supply the ink to an ink-jet head includes a nozzle ejecting ink includes an ink pouch configured to store ink to supply the stored ink to the ink-jet head, an airtight casing connected to a gas pressure control system, a pouch holding part configured to hold the ink pouch while the ink pouch is inclined at a predetermined angle, and a pouch rotating part configured to rotate the pouch holding part on a predetermined rotating shaft to agitate the ink stored in the ink pouch, wherein the gas pressure control system is configured to control gas pressure of an internal space of the airtight casing, thereby allowing the ink stored in the ink pouch to maintain the meniscus state thereof at the ink-jet head.