Freshwater fry sales system case study of Chumpon Farm 2 was to develop a system for selling fry of the farm. That allows recording of data including the sale of fry and the reservation of the farm fry. Which takes notes with paper or whiteboard to be automated, more convenient and faster Which can examine the baby fish data Price, cost, sales price and revenue information And able to issue a report of the sale of the fry and the monthly delivery report of the farm. Researchers have implemented a system for selling freshwater fry. A case study of Chumpon Farm 2, which was developed for a sample group, fish farming business operators, was able to experiment by installing computers and selling freshwater fry to farm owners. In addition, the system has been tested for use and evaluation. It was found that the satisfaction of users with the overall work system was at the highest level. The mean is 4.27 and the standard deviation is 0.53.