A toilet unit (A) for use in a supine position comprises: a substantially oblong support casing (55) formed in a substantially boat shape and a treating body (56) housed in the support casing and formed in a substantially T-shape by a urination and defecation container (82), serving as a lateral casing, of which the inside is formed a boat shape and a washing nozzle retainer (61), serving as a vertical casing, which stands upright on the downstream side of the urination and defecation container (82), wherein a head section of the urination and defecation container (82) is provided with an injection nozzle (105) for crushing stools of a patient, the washing nozzle retainer (61) is provided with a washing nozzle (203) and a bidet nozzle (202), and a domed cover body (59) 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 (61).
