The stainless steel floor spring door leaf is equipped with infrared anti-pinch sensors and anti-collision strips to protect students' safety; the door frame is made of 304 stainless steel, which is wear-resistant and suitable for students to enter and exit frequently; the floor spring is heavy-duty and will not deform after long-term use. The door glass is optional with anti-glare to avoid glare from strong light; a visual window can be installed to facilitate teachers to observe the situation outside the door; it is suitable for school classrooms and teaching building entrances.