This research was conducted to determine the effect of computer-based discharge training on patients with lumbar disc surgery on self-care agency and independence in daily living activities. A randomized controlled study was conducted on 60 patients, 30 in the intervention group and 30 in the control group. Computer-based lumbar disc surgery discharge training and a CD containing the training content were given to the intervention group after the surgery, whereas the control group received routine discharge training in the ward. The data of the study were collected using a Patient Information Form, the modified Barthel Index, and the Exercise of Self-Care Agency Scale. The increase in the modified Barthel Index and Exercise of Self-Care Agency Scale scores after training in the intervention and control groups were statistically significant (P < .001). The increase in Exercise of Self-Care Agency Scale scores after the training was found to be higher in the intervention group than in the control group. There was no difference between the modified Barthel Index mean scores before and after the training between the groups (P > .05). Computer-based discharge training improved the participants' independence in their daily living activities and increased the self-care power of the patients compared with the control group.