The thesis concentrates on the issue of sexual abuse in childhood. The work is divided into four main chapters. The first and second chapter characterizes the development of a role of child from past to the present, particularly in legal terms. The author's focus is dedicated to the term definition of sexual child abuse, data and incidence of sexual abuse in context with other countries. Supported by viewpoint of other authors, a description of different views on sexual abuse of children is presented with specific forms of abuse (contact and non-contact). The third chapter deals with specific risk factors, related to children, the perpetrators (aggressors) and families. Autor´s focus is on the offender (deviant and non-deviant) and their degree of threat. The data is supported by research results published in the Czech Republic and statistical data from OSPOD MLSA. The last, fourth chapter is considered by the author to be of a great importance as it discusses the implications derived from sexual abuse in childhood. This traumatic experience may have crucial impact on further development and quality of life of the victim. The work is concluded with offers of preventative methods and the role of social worker in the process of uncovering a case of sexual abuse of a child.