A needle seat assembly for a syringe-type vacuum blood collector comprises a vascular puncturing needle (11), a puncturing needle seat (13), a blood collection needle tube (12), a blood collection needle seat (14), and a soft connection tube (15). The puncturing needle seat (13) is positioned at a front end of a chamber in a syringe (3) of the vacuum blood collector, the blood collection needle seat (14) is fixedly connected with the syringe (3), and a rear end of the blood collection needle tube (12) and most part of the needle tube extend backwards and are interposed in a tube plug of a blood sample collection tube (2) of the syringe (3). One end of the soft connection tube (15) is fixedly connected with the puncturing needle seat (13), the other end is fixedly connected with the blood collection needle seat (14), and the core of the soft connection tube (15), as a sealed chamber, is in communication with a cavity of the puncturing needle seat (13) and a cavity (142) of the blood collection needle seat (14). When the operation of inserting the blood sample collection tube (2) into the syringe (3) is performed, an operating force transferred from the blood sample collection tube (2) is transferred to the syringe (3) through the blood collection needle seat (14) because the blood collection needle seat (14) is fixedly connected with the syringe (3). The flexibility of the soft connection tube (15) ensures that the operating force is not transferred to the puncturing needle seat (13) or the vascular puncturing needle (11). As a result, the operating force transferred from the blood sample collection tube (2) does not pose any impact on the vascular puncturing needle (11).La présente invention concerne un ensemble siège daiguille pour un dispositif de collecte de sang sous vide de type à seringue qui comprend une aiguille de ponction vasculaire (11), un siège daiguille de ponction (13), une canule daiguille de collecte de sang (12), un siège daiguille de collecte de s
