Backlight module, maintenance method thereof, maintenance tool and display device

The embodiment of the invention provides a backlight module, a maintenance method thereof, a maintenance tool and a display device. The backlight module comprises a light-emitting substrate, a back plate and an easy-to-pull adhesive tape, the back plate is located on the backlight side of the light-emitting substrate and comprises an avoiding area and a bearing area located outside the avoiding area, the bearing part is located in the bearing area, and the easy-to-pull adhesive tape extends in the first direction and is located between the back plate and the light-emitting substrate; the easy-to-pull adhesive tape comprises a first part and second parts located on the two sides of the first part in the first direction, the pasting faces on the two sides of the second parts are pasted to the light-emitting substrate and the bearing part respectively, the first part is located in the avoiding area in the second direction, and the side, facing the light-emitting substrate, of the first part is attached to the li