Based on the survey data of 11 large public libraries and university libraries, the multivariate linear regression equation is established to investigate the relationship between the objective lighting parameters and subjective evaluation, which aims to establish the prediction model of subjective evaluation of visual satisfaction associated with lighting parameters. The model shows that when using the electronic reading media in open reading space of the library, the readers' visual satisfaction would be improved with the increase of average value of horizontal illumination and vertical illumination, the decrease of the average degree of slope illumination, the increase of the uniformity of oblique illumination and vertical illumination. The results indicate that the uniformity of oblique illumination has a greater impact on visual satisfaction.