This study aims to investigate the potential effects of the amount of time spent consuming different digital media contents such as learning, games and entertainment, on mental well-being (MWB) among Jordan university students and the mediating effect of online social support (OSS) during Corona pandemic. Data has been collected from 5 private and public universities in Jordan, where 332 students responded to (MWB) scale and (OSS) scale. Structural equation modelling has been applied. The study has found that none of the times has a significant direct effect on (MWB). Moreover, only the indirect effect of time spent on covid-19 contents is not significant, where the indirect effect of times has spent on learning, games and Entertainment are all significant. Significantly, the overall effect of time spent on digital media has been significant just in case mediated by online social support (OSS).