A needle puncture device comprises a needle base (10) and a needle (20) placed in the needle base (10). A first cover component (30) is slidably provided above the needle base (10), and a second cover component (40) is slidably provided above the first cover component (30). An upper surface of the needle base (10) is provided with at least one protrusion (11). A rear end of the first cover component (30) is provided with a through hole (31) having at least one elastic restriction portion (32) therein. If the protrusion (11) moves to a location between an inner wall of the through hole (31) and a free end of the elastic restriction portion (32), the elastic restriction portion (32) restricts the protrusion (11) from moving toward a fixed end of the elastic restriction portion (32). A first stopper mechanism is further provided between the first cover component (30) and the second cover component (40). After the needle puncture device is used, the cover components above the needle base (10) can quickly cover the needle (20), and connections of the cover components to the needle base (10) are secure, such that the cover components do not spring back, thus effectively improving product safety.La présente invention concerne un dispositif de ponction à aiguille qui comprend une base daiguille (10) et une aiguille (20) placée dans la base daiguille (10). Un premier composant de couverture (30) est disposé de façon coulissante au-dessus de la base daiguille (10), et un deuxième composant de couverture (40) est disposé de façon coulissante au-dessus du premier composant de couverture (30). Une surface supérieure de la base daiguille (10) est pourvue dau moins une protubérance (11). Une extrémité arrière du premier composant de couverture (30) pourvue dun trou traversant (31) comportant au moins une partie de restriction élastique (32) dans celui-ci. Si la protubérance (11) se déplace à un emplacement entre une paroi interne du trou traversant (31) et une extrémité libre de l
