Abstract: The invention discloses an environmentally friendly portable sharps box. The main technical solutions include: a box body and a box cover, the outer edge of the open end of the box body has external threads, and the box cover has an L-shaped cross section A ring part, the inner edge of the vertical section of the ring part has an internal thread matched with the external thread, a ring groove is also formed on the box body, and a thread is formed between the bottom end of the box cover and the ring groove Connection, the box cover is provided with an input port, the box cover is provided with two semi-circular pressing blocks at the input port, and the box cover is provided with two semi-circular pressing blocks for sliding.