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Summary :
Conceiving pedophilic sexuality as a sexuality resulting from a lack of gratifying relationships to adults is an important operational reference for the clinician. In this way, the obstacles to sexual satisfaction with adults can become the privileged targets of therapeutic and preventive acts. The narcissic fragility is certainly an obstacle common to almost all the pedophilic patterns. Beyond this common denominator, the individual cases are characterized by strong dissimilarities. The variety of the cases justifies the attempts to classify the different types of pedophiles. But the typological systems are also quite different, depending on the theoretical and methodological preferences of their authors. Starting from the ideas of several authors, this article try to sum up the variety of pedophilic functioning in four axes of variation. At last, the article stresses the importance of contexts of life as factors leading a predisposed personality to transgression.