The research of criminal act structure of minors is considered as social phenomenon related to different human communities in spite of their difference in values, standards and social rules. In terms of this phenomenon, the Algerian society is one of concerned societies in which investigation remains complex because research pass through different levels linked to social organization forms that Emile Durkheim considers as integral part of social system where durability and continuity depend on.
Anthony Giddens admits that structure and act are in constant state of development and construction, that is why a new step of this construction and development are shaped because criminal act has a common purpose needs a decision taking and judicious organization where group of minors and band become hierarchical organization in professionalism state.
The latter led to a new transformation in terms of phenomenon processing that is one of the greatest disasters affect the interest of individual, security and stability of society in general en particular.
As far as these problems and hypothesis that criminal phenomenon lies down in terms of structure of criminal act for minors in the Algerian society, we set up a filed study in Cité Seybouse, Wilaya of Annaba in order to shed light on repercussions of this disaster on social values system in the analysis of structure of criminal act of minors and its interpretation so as to define development way or method of this social structure till policies instauration that can diminish this phenomenon which we will deal with answering the following sub-hypothesis:
1. Is the criminal act structured and developed according to social system?
2. Do group of minors play a role in producing criminal act?.
Keywords: Structure of Act, The Algerian Family, Group of Minors