Provided is an environmentally friendly portable sharp instrument box, comprising a box body (1) and a box cover (2), wherein external threads (100) are provided at the outer edge of an opening end of the box body (1)； the box cover (2) is provided with an annular portion (21) with an L-shaped section, and internal threads (210) matching the external threads (100) are arranged on the inner edge of a vertical section of the annular portion (21)； the box body (1) is further provided with an annular groove (11), and the bottom end of the box cover (2) is in threaded connection with the annular groove (11)； a feeding port (22) is provided on the box cover (2)； and two semicircular pressing blocks (221) are arranged at the feeding port (22) of the box cover (2), and two first sliding grooves (2210) for allowing the semicircular pressing blocks (221) to slide are provided on the box cover (2). When sharp instruments are discarded into the sharp instrument box, one of the semicircular pressing blocks can be pulled, so that part of the feeding port on the box cover is opened, if the sharp instruments are thought to be too long, the semicircular pressing blocks can be loosened, and under the action of first springs, cutting blades at a semicircular notch on the semicircular pressing blocks are used for cutting the sharp instruments, so that the space utilization rate in the sharp instrument box can be improved in a covert manner.L'invention concerne une boîte à instruments tranchants portative respectueuse de l'environnement, comprenant un corps (1) de boîte et un couvercle (2) de boîte, des filetages externes (100) étant disposés au niveau du bord externe d'une extrémité d'ouverture du corps (1) de boîte ； le couvercle (2) de boîte est pourvu d'une partie annulaire (21) ayant une section en forme de L, et des filetages internes (210) s'accouplant aux filetages externes (100) sont agencés sur le bord interne d'une section verticale de la partie annulaire (21) ； le corps (1)
