Purpose: This study was done to develop and evaluate a web-based education program to reduce restraint use by nursing caregivers in nursing homes. Methods: A web-based education program was developed and the effect was examined using a randomized, single-blind, control-group pretest-posttest design. Seventy-six nursing caregivers in one nursing home participated in this study (38 in the experimental group and 38 in the control group). The experimental group received the web-based education which consisted of six sessions. Data were collected at baseline and postintervention using three instruments to measure nursing caregivers' knowledge, perception, and attitudes to restraints. Results: Demographic and dependent variables did not differ between the two groups. There were statistically significant effects of the web-based education on nursing caregiver's knowledge (t=6.59, p<.001), perception (t=-3.54, p=.001), and attitudes (t=2.58, p=.012; t=-2.51, p=.014) regarding restraints. Conclusion: The results indicate that web-based education is an effective intervention to improve nursing caregivers' knowledge, perception, and attitudes regarding restraints. Future study needs to investigate effects of the web-based education on the reduction of restraint use, and to compare the effects of web-based education with effects of other interventions.