Disclosed is a lacrimal ductule embolus, comprising a body (2) extending in an axial direction of a lacrimal ductule. An outer side wall of the body (2) is provided with a protruding portion (21) extending towards a lacrimal ductule wall (4), with a surface of the protruding portion (21) forming an outer tear fluid passage (3) with at least part of the outer wall of the body (2) and the lacrimal ductule wall (4). A tear fluid passage is modified from a common traditional inner passage to an outer passage. The protruding portion (21) not only serves as a structure that forms the outer tear fluid passage (3), but also serves as a structure that holds a lacrimal ductule embolus inside the lacrimal ductule so as to immobilize the lacrimal ductule embolus. The lacrimal ductule embolus is preferentially prepared from an individual SIBS elastomer material having excellent biological compatibility and biological stability, or by means of a technological method of melt-blending with silver nanoparticles. The lacrimal ductule embolus product has a simple structure, is reliable and stable in terms of positioning, and greatly reduces the probability of the occurrence of foreign body reactions and tissue inflammation.L'invention concerne un embole de ductule lacrymal, comprenant un corps (2) s'étendant dans une direction axiale d'un ductule lacrymal. Une paroi latérale externe du corps (2) comprend une partie en saillie (21) s'étendant vers une paroi de ductule lacrymal (4), une surface de la partie en saillie (21) formant un passage de fluide lacrymal externe (3) avec au moins une partie de la paroi externe du corps (2) et de la paroi de ductule lacrymal (4). Un passage de fluide lacrymal est modifié d'un passage interne classique commun en un passage externe. La partie en saillie (21) sert non seulement de structure qui forme le passage de fluide lacrymal externe (3), mais sert également de structure qui maintient un embole de ductule lacrymal à l'intérieur du ductule lacrymal
