Fecal incontinence (FI) is a common health problem, affecting 1-10% of the adult population experiencing significant impact on daily activities; Fecal incontinence was considered as a distressing condition, resulting in physical, psychological, social and economic implications therefor we must study biofeedback techniques with pelvic floor strengthening exercises as the first line of treatment for patients with fecal incontinence. The aim of this study was to compare the effects of manometric and electrical stimulation biofeedback on improving bowel function control for the treatment of FI in adult. This study was conducted at the gastroenterology motility unit of gastroenterology center, Mansoura University using a quasi-experimental design. The study included 60 adult patients divided into 30 subjects in manometric group and 30 subjects in ES group. Two tools used for data collection in this study, patient's assessment interview sheet used to collect data about patients socio-demographic characteristic, past history, patients complains and general examination. Biofeedback assessment questionnaire sheet, this instrument consisted of BF questionnaire and anorectal manometry assessment at referral, after BF& after 6 months. The present study results concluded that there was no significant difference between two methods of biofeedback on Storage capacity (soiling, urgency, use of pad, and Life style alterations), anal sphincter pressure (resting pressure and squeeze pressure), rectal sensation (initial sensation, urge to defecate, max volume), wexner score and severity & frequency of fecal incontinence at post biofeedback and follow up except at Squeeze pressure the manometric based biofeedback group are more improved immediately post training and at follow up. The study recommends that further studies with a large number of patients are needed to confirm these findings and these studies should include other outcome measures, such as the cost benefits of home training program.