A breathing protective device to be installed in a tracheostoma, which comprises； a filter housing (100, 200, 300) with a central axis, a distal end, a proximal end, a first opening (101, 201, 301) and a second opening (102, 202, 302), wherein said second opening (102, 202, 302) is located at a proximal end of said filter housing (100, 200, 300), and said first opening (101, 201, 301) is located distally with respect to said second opening (102 , 202, 302), such that said first opening (101, 201, 301) is located upstream of said second opening (102, 202, 302) during inhalation； a heat-humidity exchanger filter (103, 203, 303) received in said filter housing (100, 200, 300), wherein said heat-humidity exchanger filter (103, 203, 303) is resilient； a valve seat (105, 205, 305) around said first opening (101, 201, 301)； a rail, located circumferentially with respect to said valve seat (105, 205, 305), extends axially and distally from said first opening (101, 201, 301), said rail comprises at least one rib (106, 206, 306 ) extending axially and distally from said first opening (101, 201, 301) and at least one hole (108, 208, 308) perpendicular to the central axis； a valve member (109, 209, 309), arranged in a plane transverse to the central axis, adapted to engage with closure with the valve seat (105, 205, 305) in a closed position, said valve member (109, 209, 309) is arranged reciprocatingly in said lane between the closed position and an open position； a return spring that presses the valve member (109, 209, 309) axially and distally in the open position； characterized in that the heat-humidity exchanger filter (103, 203) is the return spring, and in which a distal movement of the valve member (109, 209, 309) is hindered by the rail (106, 206) in the open positionUn dispositivo protector de respiración que se va a instalar en un traqueostoma, que comprende； una carcasa de filtro (100, 200, 300) con un eje central, un extremo distal, un extremo proximal, una primera
