The present invention relates to a seating apparatus for the diagnosis and treatment, and more particularly, to a seating apparatus for diagnosis and treatment of diagnosing and curing urinary incontinence, erectile dysfunction and defecation disorders which enables to diagnose symptoms of urinary incontinence, erectile dysfunction and defecation disorders by measuring contraction pressure and contraction duration of pelvic floor muscles, muscles of perineum and anal sphincters of a user, who puts on cloth while seated, simultaneously with curing symptoms of urinary incontinence, erectile dysfunction and defecation disorders throughout biofeedback exercise and training.