The present invention is esophageal stent valve for keeping the tubular organs open to a desired limit when the passage gets blocked due to the esophageal growth such as esophageal tumor, malignant or benign. More particularly, the present invention relates to the esophageal stents with uni - directional anti reflux valve for preventing harmful gastric acid reflux in a patient. It includes a uni- body stent and a uni - directional anti reflux valve and a coating over the stent such that the valve is attached to the stent with some adhesive. The proximal end of the valve is flared outwardly and the distal end is in "S" shape.