The article concerns with disembowel the constitutional endures ofevidence law and, thus, the juridical evidence in its different species.For this matter the author starts standing the principle according towith the political constitution is the main source of all our objectiveand positive legislation.Subsequently, the author precis the notions of evidence law, thejuridical evidence and its species ad substantiam actus y adprobationem, administrative evidence, and judicial evidence. Withthose concepts the author initiate the search of the differentconstitutional dispositions which focus in the latter making therespective inventory.