Printer ink cartridge convenient for ink injection

The utility model relates to the technical field of printing, in particular to a printer ink box convenient for ink injection, which comprises a main ink storage box, an auxiliary ink storage box is fixedly mounted on the left side surface of the main ink storage box, an exhaust pipe is fixedly mounted on the upper surface of the auxiliary ink storage box, the exhaust pipe is communicated with the interior of the auxiliary ink storage box, and a one-way valve is fixedly mounted on the inner wall of the exhaust pipe. An ink injection pipe is fixedly installed on the upper surface of the auxiliary ink storage box, the ink injection pipe is communicated with the interior of the auxiliary ink storage box, and an adjusting assembly is jointly arranged in the main ink storage box and the auxiliary ink storage box. By arranging the adjusting assembly, the device can add ink into the main ink storage box without manual operation, the device is convenient to use, the use efficiency of the device is improved, the air b