Every human action concerning to human brain contains the time between the brain decision and the action, so it is very difficult for Scientists, who study about human, especially Ergonomist, to get correct analysis. This study, therefore, had an experiment to get a time during taking some action, which does not ask any brain work called human basic reaction time. Then, the result of this study can be used to have much more correct data analysis from your experiment by removing the time we do not need. Especially, this study deals with the basic reaction time of old people to compare with young age which took before by us, and we want to know the relation between the age and their basic reaction time.