Suicide comes from latin words sui-yourself, and occidere – to kill. Suicide is consciously or intentionally taking or attempting to take your own life. Voltaire considered suicide as voluntarily ending of your own misery. Milĉinski considered suicide as an act in which a man kills himself, and does it with intention to take his own life away. According to E. Schneidman, two most important terms that describe suicide are intention and motivation, so he defines suicide as a conscious self destructive act emerging from many weaknesses that person can not resolve in other ways. According to World Health Organisation (WHO, 2006), one million people a year commit suicide. Therefore, suicide, attempting suicide and suicidal intentions are an important problem not only in psychiatry, but also in public health and society in general. It is estimated that by the year 2020., suicide rate could grow up to million and a half (WHO, 2006). Many scientists say that suicide rate has increased by 60% in last fifty years, mostly in developing countries. Largest number of suicides is occurred in Asian countries, and it makes 60% of the total number of suicides in the world. Men are more common to commit suicide, and women are more common to attempt suicide, but not successfully. Riskiest age group for committing suicide are people over 75 years old. Countries with very high suicide rate are: Lithuania, Latvia, Hungary, Estonia and Russia. Countries with high suicide rate are: Ukraine, Slovenia, Kazakhstan, Finland, Croatia, Byelorussia, Austria. Considering the fact that suicude is third most common cause of death in developed countries, focus should be on taking prevention measures to decrease the number of suicides. Prevention measures include professional medical care for persons with mental disability: it includes primary, secondary and tertiary prevention, more adequate detection of mental disorder and treatment, and monitoring the state of patients, their rehabilitation and resocialization. Further prevention includes limiting access harmful and dangerous substances, and limiting suicide reports because the description of suicide can stimulate others to that type of behaviour. Important role in prevention suicide is forming an institution called Crisis center, where people can search for help in any given time. Study was conducted form July 2015 till September 2015 in University for Psychiatriy Vrapĉe, Zagreb, Croatia on 60 health – care participants. Aim of the study is indentification of attitudes and knoweledges of suicidal patients. Ethical Comitee of Uiversity Hospital Vrapĉe approved study. Results shows that healt – care proffesionals have prejudice and insuffitiently knoweledge about suicidal persons so continuous education about correct approach, recognition and tretment of suicidal person is necessary.