The author tries to show similarities and distinctnesses between two conceptions of the 20-th century philosophy of dialogue formulated by Martin Buber and Franz Rosenzweig. Regardless of common elements in thoughts of both friend-thinkers there are some differents, what provokes into comparison their positions. We can also inquire of reasons, which make level discrepancies impossible. The main subject of Buber's consideration is double-image of reality as a consequence of twofold way of meeting with it. The first type of 'relation' (the proper one (Beziehung)) takes place when man attitude links to fundamental word 'Me-You' (Ich-Du). Second type of relation is called by Buber 'connection' (Verhaeltnis). It implements when man attitude links to word 'Me-It' (Ich-Es). The difference between these words (and similarily - between two attitudes) is evident. The word 'Me-It' makes the subject, involves concepts. By means of them a man builts conceptions of reality, but he doesn't experience its presence. Rosenzweig raises objections to this conception.