My thesis deals with the problems of sexual abuse of children. It is divided into nine chapters, each of which has a subhead. In the first part, I focused on the term of child sexual abuse. In the second part, I focused on the problem of sexual abuse of children by family members. In the third part, I explained the term of commercial sexual violence committed against children. In the fourth part, I focused on the victims of sexual abuse and in the following part, I focused on the perpetrators. In the sixth part, I described the consequences of the abuse and in the seventh part, I described the therapy. I put a stress on the eighth part which deals with the sexual abuse prevention. The thesis ends with the ninth chapter where I described the moral crimes.