A variable mobile flush toilet is developed with the following features: For continuously safe and comfortable use for both caretakers and caregivers, the equipment is detachably installed in a single room at the time of renovation of the facility, and the position can be changed to an easy-to-use place according to the user`s physical condition. Additionally, even in a living room, it allows easy transfer mobility as well as maintenance of excretion postures with an armrest of the toilet, and also completely discharges and removes unpleasant odor.