In this research try to analysis the point of view of three Islamic philosopher about human individual distinguish after death. Apart from some individual distinguish criterion that each of them puts away in a different way, Avicenna clearly relates human individual distinguish to their previous sense of belonging to material and its feature in natural world, it seems that when the material is demolished individual distinction which was created by that material, will not last. It is as if scientific and practical habits are considered as the best criterion for individual distinguish after death. But in this case (in his book Alesharat-Va-Attanbihat) he considers practical habits more influential in human individual distinction, while in his other book Almabdae-Valmaad he considers practical and scientific habits influential cooperatively. Also regarding to his idea which he assumes materialistic body the only obstacle to obtain intelligibles against permanent gracious active intellect, hence after this obstacle is demolished after death, all intelligibles for all people suddenly is obtain, and then not a single individual distinction will remain between people. But in his other book (Almabdaa-Va-Almaad) he believes as long as dependency upon material and vices attributes exist in soul, intelligibles will not fully awarded; So, it can be said the process of perfectibility will somehow continue even after death. Averroes in his book (Asharh_Alkabir) opens the way with the assumption that a kind of matter and form for total abstract. In addition, there are some other solutions such as supposing people as unique species. In Mulla Sadra philosophy individual distinguish is connected to particular existence of each individual that their body creates their particular existence including material, virtual or future body. Also, in his point of view since body and soul have inherent belonging, and that somehow practical and scientific habits creates his ethereal body. Therefore, in his philosophy individual distinction is those bodies that he may not need them epistemologically and ontologically, but the body exist alongside the soul till the last level of the perfectibility process of soul because of inherent and constitutive dependency between them and this is contemplated as human individual distinguish criterion.