“Every day, adults take decisions for young people without consulting them” said a 17-year old member of « Youth Force». While the role played by different stakeholders in the fight against commercial sexual exploitation of children has been studied, very few research has been done on child participation within this fight. However, children and youth are directly affected by this problem and are the first concerned and impacted by the protection measures. This analysis explores the role of child participation in the fight against commercial sexual exploitation of children and how this participation can be implemented.