A porous tantalum metal hollow screw comprises a screw shaft (1) and a screw head (2). The screw shaft (1) and the screw head (2) are integrally formed. A thread (11) is disposed on the outer surface of the front end of the screw shaft (1), and the ratio of the length of the thread (11) to the length of the screw shaft (1) is 1:1.7-2.3. The screw head (2) is a conical screw head (2) having a cylindrical screw top, and the included angle between the conical surface of the conical screw head (2) and the central line of the screw shaft (1) ranges from 44 degrees to 46 degrees. Grooves (21) symmetric about the central line of the screw shaft (1) are formed in the outer surfaces of the two sides of the cylindrical screw top； the included angle between the two inclined surfaces of each groove (21) is 60 degrees. A through hole is formed in the central shaft of the screw shaft (1). A smooth sliding shaft (1) is disposed between the thread (11) and the screw head (2). By means of the structure of the hollow screw, screwing-in and firm fixation of the hollow screw are facilitated, secondary displacement at a bone fracture part is avoided, the defect of deformation of the tail part of the screw when the screw is screwed in is overcome, and force can uniformly reach the front end, thereby reducing the possibility of deformation and cracking of the screw.Cette vis creuse poreuse en métal de tantale comprend une tige filetée (1) et une tête de vis (2), la tige filetée (1) et la tête de vis formant un tout solidaire. La face externe de l'extrémité avant de la tige filetée (1) comporte un filetage (11) dont le rapport de longueur avec la tige filetée est de 1 : 1,7-2,3. La tête de vis (2) est une tête de vis de forme annulaire dont le bout adopte une configuration cylindrique, la surface conique de la tête de vis (2) de forme conique formant avec la ligne centrale de la tige filetée (1) un angle incliné compris entre 44 et 46 °, et la surface externe des deux côtés de la tête de v
