Background: Ergonomics is the science of designing tasks, jobs, information, tools, equipment, facilities and the working environment to enable people to perform tasks in a safe, effective, productive and comfortable environment. The study aimed to evaluate the effect of the ergonomics training program for prevention of health disorders among computer operators. Research design: a quasi experimental study. Setting: the study was conducted at Bank Al Qahera, Jossef Abbas branch, Nasr City. Sampling: 130 computer operators selected systematically. Tools: 1) A questionnaire for assessing computer operators' socio-demographic characteristics, working conditions, ergonomically health history and back symptoms used pre & post program implementation. 2) An observational checklist for assessing the workstation ergonomics environment. 3) An observational checklist for assessing the ergonomically workstation practices pre & post program implementation. Results of this study indicated that, most of the studied sample were totally using computer 7-12 hours/day. Post implementation of the training program, there was a highly significant improvement in upper and lower back symptoms of the computer operators. Conclusion: The study proved a significant positive improvement in computer operators' practices and back disorders related to workstation ergonomics through post implementation of the ergonomically training program. Recommendation: The study recommended that occupational health nurse should be assigned in each bank to conduct health services and training programs for all computer operators.