A toilet unit for use in a supine position comprises: a substantially oblong support casing formed in a substantially boat shape and a treating body housed in the support casing and formed in a substantially T-shape by a urination and defecation container, serving as a lateral casing, of which the inside is formed a boat shape and a washing nozzle retainer, serving as a vertical casing, which stands upright on the downstream side of the urination and defecation container, wherein a head section of the urination and defecation container is provided with an injection nozzle for crushing stools of a patient, the washing nozzle retainer is provided with a washing nozzle and a bidet nozzle, and a domed cover body for covering the private parts of the patient is pivotally provided to be openable and closable at an upper edge of the washing nozzle retainer.
