It was in July this year that the man was arrested after the plaintiff had provided information about abuse against a close relative.
The indictment concerned 22 charges - 79 counts of aggravated rape of a child and 178 counts of rape of a child.
The man was also charged with child pornography and sexual posing.
Sentenced to prison and damages
The district court announced on Monday that the man was convicted of, among other things, at least 18 aggravated rapes against children and 95 rapes against children of the normal degree.
The aggravated rapes against children were judged to be aggravated in view of the plaintiff's young age.
The penalty is that he is sentenced to 10 years in prison and must pay SEK 430,000 in damages for violation, burning and pain to the plaintiff.
District Attorney Irene Falk demanded 10 years in prison for the man, but his defense attorney considered that the penalty for most of the charges was two to four years.