The present disclosure provides a display module and a display device. The display module includes: a circuit board including a first surface and a second surface opposite to the first surface; a display substrate on the first surface of the circuit board; a first glue layer on the first surface of the circuit board and surrounding the a sidewall of the display substrate; and a second glue layer on the second surface of the circuit board, wherein a transparency of the second glue layer is different from a transparency of the first glue layer.