Toilet cleaning is one of the tasks that automation is particularly required at retail stores such as convenience stores. In this paper, we proposed a toilet for reducing scattering of urine and developed “Toilet bowl top cleaning mechanism”. The mechanism is built in toilet seat, and consists of a timing belt and pulleys. It cleans top of the toilet bowl with cleaning tools attached to the timing belt while toilet seat is closing. Cleaning ability of the mechanism was evaluated by using simulated urine. As the results, this mechanism cleaned up simulated urine with a removal rate of over 96% on average.