An ink circulation system, an inkjet recording apparatus having the ink circulation system, and an ink circulating method thereof. The ink circulation system includes an ink tank including an ink outlet and an ink inlet, a head assembly including a head chip through which an ink is discharged, and a filter, a supply path which supplies the ink of the ink tank to the head assembly, a first feed line through which ink of the head assembly at the upstream of the filter is conveyed into the ink tank, a second feed line through which the ink of the head assembly at the downstream of the filter is conveyed to the ink tank, and a pump which is provided at the ink inlet of the ink tank to provide the first and the second feed lines with a negative pressure to circulate the ink.