The administration of penitentiary units takes steps to protect human life and the lives of prisoners. Human life is the highest value and is subject to the law in Poland. The law protects a citizen residing in a penitentiary unit, but in cases of isolation from society, there are cases in which people in prisons or pre-trial detention facilities commit suicide. The following analysis describes such cases, which cover the years from August 2013 to the end of August 2018. The data for the analysis were taken from situational reports prepared by the prison service on duty, the presented graphs were divided into several parameters and guidelines, which were included in the reports on these issues. The total number of suicides and suicide attempts in particular years was taken into account, broken down by month, and the place of attack on life and self-harm was presented. An important element is to show in which direction officers and employees should be trained in the principles of first aid. It is clear that the number of suicide attacks in 2013-2018 is significant. It is important to use monitoring in those rooms where most of the prisoners attack by cutting their forearms and neck, so train officers how to properly protect such a person, emphasizing the right choice of prisoners in a residential cell - awareness of responsibility for another person's life which will measurably affect the sense of security and comfort of the officers' work, and thus increase the safety of the prisoners themselves.