Abstract: Study was conducted to evaluate the effect of probiotic on the survival and growth performance of white-leg shrimp (Litopenaeus vannamei) in earthen ponds. Two treatments were carried out including treatment 1 where probiotic was added in every 7 days and a control where probiotic was not added, triplicate for each treatment, shrimps (2.9 cm in length; 0.26 g in weight) were stocked at 50 ind/m2. After 60-day of culture, the result showed that shrimps in the probiotic added treatemnt were significantly better performance in term of length and weight than without probiotic added treatment. However, the survival and production of shrimp was not significantly higher than the without probiotic added treatment.