Around the psychoanalysis object argues the relationship among psychoanalysis and science focusing the psychoanalysis object specificity. Going from contemporary epistemologic debate context to the psychoanalysis birth, it considers Freud s dilemas in locating this new knowhow field that was born out of the science s ideal that demands a clearly definite object, and as Lacan retakes this dilema. It defines the specific field of the psychoanalysis performance, called by Freud of psychic reality and wich characterizes itself for being a sexual reality. It is in this sexual term that the psychoanalysis object locates itself and that Lacan names it object a. It Brings as question what would be the psychoanalysis objectalism, neologism that Lacan considers to oppose itself to science s objectivism.