According to the sale forecasting method which we are focusing on the Microforecasting is concerned with detailed unit sales forecasts. This is about determining a product’s market share in a particular industry and considering what will happen to thatmarket share in the future. Then people will know from a word of mouth because wegood in service, ice-cream is good taste and service mind on employees. However wecan make more sales and more customers in these second year and next year. In everyyear, From interviews of ice-cream in Chiang Rai. a province. We have the newcustomers who travel in Chiang Rai to get in our shop. So high season of Chiang Raican help increase sales of our shop. But on July until October. We have fewer sales because it’s rain season of Thailand