The embodiments of the invention provide a backlight module, a display panel and a display device. The backlight module includes two sets of lamp bars arranged side by side, a first backlight driving module, a second backlight driving module, a plurality of first transfer circuit boards, a plurality of second transfer circuit boards, a plurality of first connection lines and a plurality of second connection lines. A plurality of first lamp bar units in the first set of lamp bars are coupled to the first transfer circuit board, and in turn coupled to the first backlight driving module through first connection lines. A plurality of second lamp bar units in the second set of lamp bars are coupled to the second transfer circuit board, and coupled to the second backlight driving module through second connection lines. Each first connection line is the same as the corresponding second connection line.