Abstract : The "juge des référés" (the presiding judge of the competent jurisdiction or the first presiding judge of the court of appeal), has a fundamental role in the judicial activity. In spite of the fact that he does not pronounce judgment on the merits, this judge has the power to order immediately all necessary measures (section 484 of "new rules of civil procedures"). Having for object a rapid solutions to a case at issue, the summary order injunction, temporary as a principle, has sometimes more than interim effects : either the measure ordered disposes of the action or the litigants endorse the solution adopted by the "juge des référés". The analysis of the notion of "temporary", shows that it influences not only the conditions of intervention of the "juge des référés" (roled by flexible terms) but also the order delivered by this judge (scope and effects of the decision). In reality, when we say that the summary order injunction is temporary, it does not mean that it can never dispose of the action. The legislator did not go wrong : when he creates a new case of "référé en la forme", only the formal aspects of the injunction order are concerned.