To provide a splicer nozzle capable of reliably splicing carbon filament yarns and chemical synthetic filament yarns of small fiber surface resistance, and yarns of high rigidity compared with spun yarns consisting of staple fibers.

The splicer nozzle 2 comprises a pair of air ejection ports 11, 12, an air flow passage 20 to connect the ejection ports 11, 12, and an air feed port 10 which is opened in an inner wall face of the air flow passage 20. The air flow passage 20 consists of a first air flow passage 20f and a second air flow passage 20s from a center air flow passage 20m in the vicinity of a part forming the air feed port 10 to the ejection ports 11, 12, the opening sectional area thereof are continuously increased, and each inner wall face is formed of a smooth continuous surface.