Toilet lid, toilet lid assembly and toilet

The utility model discloses a toilet lid, the toilet lid can cover a toilet seat, the covering side of the toilet lid is convexly provided with a sterilization part and a covering area surrounding the sterilization part, and the toilet lid covering the toilet seat can define an annular sterilization channel surrounding the sterilization part with the toilet seat through the sterilization part and the covering area. The sterilizing part is also provided with a plurality of sterilizing holes which can be communicated to the annular sterilizing channel, and the plurality of sterilizing holes are distributed around the sterilizing part. The relatively closed annular sterilization channel enables the sterilization fluid to be retained in the annular sterilization channel within a certain time, the sterilization effect is improved, especially for high-temperature sterilization, it can be guaranteed that the temperature rises rapidly and is kept for a certain time, and the sterilization effect can be greatly improve