The installation of the elastic band toilet seat is relatively troublesome. First, place the toilet seat under the toilet cover and the seat board is upright. Then turn the inner ring of the elastic band out of the back seat hole. Remember that the ring without the hard ring Go through the toilet seat as a whole, cover a part of the cover surface, and finally turn down the outer ring of the plastic tube to cover the bottom of the seat plate. This method is suitable for both O-shaped and U-shaped toilet seats. The key is to buy the right toilet seat. If the O-shaped toilet seat is a U-shaped toilet seat, it cannot be used.