The present invention relates to a kind of for generating the spinneret assembly of fiber by polymer melt, with elongated nozzle plate, nozzle bore that nozzle plate has input channel and in downside there are at least one column to be arranged side by side in upside. Distribution plate is provided on side on the nozzle plate, distribution plate is with the distributor chamber towards input channel and the melt inlet connecting with distributor chamber. An orifice plate with multiple through-holes is provided between the distributor chamber of distribution plate and the input channel of nozzle plate, for the reallocation and uniformity for obtaining melt when melt enters input channel, according to the present invention, through-hole in orifice plate is divided into multiple hole groups, the through-hole of wherein at least two hole group has different inclinations angle relative to perpendicular bisector in hole intralamellar part in this way so that the through-hole at least partly the intralamellar part in hole be spaced from each other it is intersected with each other. Thus, it is possible to realize reallocation of the melt on the vertical and horizontal of spinneret assembly.
