The major objectives of this study were to study the financial and Economic feasibility of white grape plantation in tumbon Jedriew, amphoe Bannpaew, Samutsakorn, by comparing total cost and total revenue of the plantation. There were 60 sample grape farmers selected ramdomly from the study area by interview and observation. The analysis had divided farmers into 3 groups, small size group group with the area less than 6 rai,medium size with area greater than 6 to 10 rai and large size with area greater than 10 rai. The cost had been divided into 3 periods according to the plantation of grape; the first investment, the treat periods and grown up period. Net Present Value(NPV), Benefit/Cost ratio(B/C) and internal Rate of Return (IRR) were determined in order to analyze financial and economic feasibility. Beside this the sensitivity of the grape farm investment was studied by allowing the cost to increase while the revenue was studied by allowing the revenue to decrease while the cost was fixed. The results of the financial analysis at discount rate 12% were as follow NPV were 36,249.88, 36,569.98 and 45,106.48 baht, B/C ratio were 1.37, 1.42 and 1.61 and IRR were 39.22, 56.31 and 81.35 Percent for small medium and large farm size, respectively. From this analysis all the 3 farm size were possible to invest, especially the large farmwhich earn the highest benefit. When the sensitivity analysis was manipulated to incorporate risk and uncertain of grape farm investment by assuming the cost to increase by 10 and 20% and the revenue to decrease by 10 and 20%. The result was still possible expect the small farm. When the revenue decreased by 20%, the benefit would be below the discount rate 12 which showed the impossibility of the investment was more sensible to the change of revenue than cost. In economic analysis process, some cost items such as interest tax and depreciation were cut off. The resulted NPV were 41,503.02, 41,815.72 and 51,258.81 baht, B/C ratio were 1.46, 1.53 and 1.76, IRR were 48.65, 69.23 and 97.31 percent for small medium and large farm size, respectively. From the sensitivity analysis, it was founded that all farm sizes gave net return higher than the discount rate 12% even the revenue decreased by 20% or the cost increase by 20%. This meaned that the grape investment project was socially or economicly possible. The outcomes of this analysis suggested that a promotion of grape form investment should be highly given attention and supported by concerned agencies. Government Policies to assure grape princes, increase market demand and reduce farm cost such as fertilizer and insecticide will be helpful.