The aim of the study was to evaluate the effect of probiotics in premature newborn that Inclusion criteria: All infants below 2000 grams and over 750 grams and infants less than 37 weeks . Exclusion criteria: infants under 2000 grams, 750 grams and above, family immunodeficiency, congenital heart disease. After a group of stable vital signs and starting with minimal entral feeding to 1-8 / 0 g per day in divided doses with each feeding in the first 10 days after birth Sashە Protexin Powder 1 gram daily for 7 days or more is prescribed.Around the abdomen, bowel sounds, gastric lavage, fecal occult blood and full of feces daily, weigh daily, weekly head circumference, height and time to milk at 120-150 cc / kg / day,NEC symptoms such as drowsiness, lethargy, biliary lavage, lavage more than 50% milk three hours, increased abdominal girth of more than 2cm and stability than the previous feeding period of 6-4 hours and a clear blood in the stool as NEC onset of symptoms and NEC clinical and radiographic signs of disease are reviewed. Another group in the same group are considered as two sides Blind.