The family is a social organization where each member’s behaviors have effects on others. From the scientific reviews have been found family variables that affect behaviors as drug use, they are family communication, conflict, social support and living rules. The target of this research is focused on the construction of a test to measure these variables. The sample consists of 165 students from different university degrees in Alicante. Analyzes of the items were done through expert opinion, structural models, reliability analysis, and correlations with criterion variables and drugs use. The final result is a test composed of 18 reactants that are structured into five factors: Communication, Social Support, Conflict, Rules and Consequences, providing indices of adequate reliability and validity.