Fragment is one of the poetic molds which was of the highest interest in the 6th century and lots of poetry were composed in this mold; so as one can say that the sixth century was the climax in composing of the fragments in Persian poetry. Fragments in the 6th century were composed in different subjects. According to our survey there are 29 subjects in these fragments; but because of the limitation, we have studied only 8 subjects which are of the poets’ interest, and we have surveyed 16 poets in the 6th century which are: panegyric, inquiry, description, satire, complaint, criticism, maxims, wisdom, morality, love and lyricism. From the psychological point of view, the most important point in composing fragments of the 6th century was the need of the poets for gratuity from those who were praised and was done in different subjects such as praise, inquiry, satire, criticism, maxims (recommendation to generosity) and etc.