Printer ink cartridge capable of preventing pressure fluctuation

The utility model discloses a printer ink cartridge capable of preventing pressure fluctuation, which comprises an ink cartridge shell, an inner shell is mounted in the ink cartridge shell through bolts, mounting plates are mounted on two sides of the inner wall of the inner shell through bolts, a main anti-fluctuation plate is fixedly mounted at the bottom of each mounting plate, and a spring is welded on one side of the inner wall of each main anti-fluctuation plate. A secondary anti-fluctuation plate is welded to one end of the spring, a connecting plate is bonded to the outer wall of one side of the secondary anti-fluctuation plate, limiting pieces are installed on the two sides of the inner wall of the inner shell through bolts, a plurality of partition plates are bonded to the inner wall of the inner shell, baffles are bonded to the two sides of the bottom of each partition plate, and sponge is bonded between the two baffles. And through holes are formed in the outer walls of the spacing plates and the