The present invention relates to a nozzle device for spinning sea island cotton yarn with a shape in which a plurality of strands of threads are included in one strand of thread. The present invention realizes a novel nozzle body structure capable of tightly holding a tube of an island component supply path consisting of a plurality of groups for spinning island components of the sea island cotton yarn, so that provided is the nozzle device for spinning sea island cotton yarn in which a firmly connected state of the tube installed in the island component supply path is maintained, and the tube is prevented from being released even under a condition of heat shrinkage and the like, thereby expanding durability life of the nozzle device and securing the product quality by reducing the occurrence of defects.
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