Abstract: A bed with a built-in commode is provided which has a bed frame, a mattress having a through-hole formed almost at the central portion of the mattress and placed on the bed frame, a commode attached to the mattress at the through-hole, a pair of inflatable outer tubular pads laid along the opposed edge parts of the commode, a pair of inflatable inner tubular pads laid between the pair of outer tubular pads, a water inlet port disposed in the commode, a discharge passage communicated with the commode, an inflatable valve disposed in the discharge passage, and a controlling device to control the valve and the turbular pads. The controlling device is housed in an operating panel to control both the valve and the tubular pads so that the valve and the pair of outer tubular pads are inflated while the pair of inner tubular pads are deflated when a patient excretes, while both the pair of outer tubular pads and the pair of inner tubular pads are deflated when the valve is inflated for hip bathing.