The present disclosure discloses a backlight module and a method for assembling the same, and a display device. The backlight module includes a backplate and a light strip, wherein, on the backplate is provided a fixing structure, the fixing structure including a resilient press tab provided with a protrusion thereon projecting toward the surface of the backplate, and on the light strip is provided a hole which can be matched with the protrusion on the resilient press tab.