The international commercial arbitration can benefit of the autonomy law because the reason that justified the autonomy in the matter of contractual obligations are imposed in arbitration and not because it has a contractual power. The arbitration convention is law-abided to the incidence of the law designated of the parts lex voluntatis, solution that gives expression to the judicial equality of the parts, on the one side, and recognition of the contractual nature of the arbitration, on the other side. But in further degrees of the arbitration procedure and especially in the case of the execution of the arbitration sentences in the conditions that this law by the omission or the passivity of the parts cannot be applied, get the vocation to interfere other confliction norms.