The present invention provides a splicer nozzle (1) characterized in that a yarn splicing hole is divided, in an axial direction, into substantially two yarn splicing chambers (3, 4) formed at positions where axes (3h, 4h) of the yarn splicing chambers (3, 4) are displaced from each other, and a yarn splicing slit (2) common to the yarn splicing chambers (3, 4) is formed over the entire area of the yarn splicing hole, and in that an injection hole (5, 6) is formed for each of the yarn splicing chambers (3, 4) so that compressed air passing through the yarn splicing slit (2) to the axis (3h), (4h) of the yarn splicing chamber (3, 4) is injected through a corresponding one of the injection holes (5, 6), and an inner wall (3a, 4a) of each of the yarn splicing chambers (3, 4) located oppositean air outlet of the corresponding one of the compressed air injection holes (5, 6) is formed to be planar.