In the development of enteral foods for the patients with diarrhea, soybean hull, by-products of soybean processing, was used to prepare crude dietary fiber extracts (soybean hull fiber, SHF). Total dietary fiber content of SHF is 85% and their composition are 86.1% cellulose, 8.1% hemi-cellulose, and 4.7% lignin. The effects of SHF on the prevention of diarrhea were studied in animal. Spraque-Dawley (SD) rats were fed AIN93G diets containing 5% dietary fiber for 3days simultaneously inducing diarrhea with the phenolphthalein Mg citrate solution. On day 4, feces were collected at different time point. Dietary fibers used for the animal study were SHF, soybean cotyledon fiber (SCF), psyllium husk fiber (PHF), and chicory fiber (CF). ${alpha}$-cellulose was used as a control. Body weight gain, calorie consumed and food efficiency ratio among the experimental groups were not different. However, water content in the feces of SHF group was significantly lower by 10%, compared with other groups at 24hrs. time point. This effect was even greater in the feces collected later than 24 hrs. time point. SHF seems to have a greater effects on slow the symptom of diarrhea. Based on the previous results, enteral food enriched with SHF were prepared and its effect was compared with other commercially available products from domestic or imported ones. Weight changes among experimental groups were not different, but the moisture content of feces consumed SHF enriched products were lower than that of other products. Approximately 10% decrease in water content was observed from feces collected at 24 hr time point. According to the sensory evaluation, overall acceptability of the enteral food enriched with SHF was 3.24 out of 5 indicating that taste of this product is acceptable.