The present invention discloses a polarizing filter and a display device. The polarizing filter comprises a polarization layer and a conductive layer provided on one side of the polarization layer. In the present invention, the conductive layer is provided on the polarization layer, thus, when the electrostatic charge are present on the color film substrate having the polarizing filter, the electrostatic charge may be shielded by the conductive layer, and will not adversely affect the liquid crystal molecule between the color film substrate and a array substrate celled to the color film substrate even if the charge are present on a surface of the color film substrate, such that the display quality of the display panel having the color film substrate and the array substrate is improved. In addition, there is no need to provide a conductive tape used to guide the electrostatic charge out of the color film substrate in the display panel, so as to prevent some undesirable phenomenon, such as local uneven force on the panel, light leak and glue residue and the like, caused by the arrangement of the conductive tape.