Provided is a mobile toilet that can be used well.
A mobile toilet includes a trailer, a toilet bowl disposed in a cargo box of the trailer, a drain tank disposed in the cargo box and storing sewage discharged from the toilet bowl, a drain passage communicating between the toilet bowl and the drain tank, and a second conveyance device provided in the middle of the drain passage. The toilet bowl has a drain trap communicating with an upstream end of the drain passage, and the drain passage passes a position higher than a sealing water level of the drain trap, and has a spout space provided in a position higher than the sealing water level of the drain trap.