The research objectives were to study the marketing channels, production costs, and production costs management of Makiang juice by using an in-depth interview. The key informants were 5 people who involved in the Makiang juice of the Faculty of Engineering and Agro-Industry at Meajo University in August 2021. The research showed that 1) the researcher created a distribution channel Line Official Account or line OA to be easily accessible to customers, 2) the costs of Makiang juice production were 6,906.27 baht; consisting of raw material costs 1,667.96 baht, labor costs 1,000 baht, and production costs 1,738.30 baht, cost production per unit 16.29 baht for producing 330 bottles, and cost production per unit 28.79 baht which include packaging costs per unit 12.50 baht, 3) The production costs management; for selling at a price of 35 baht per bottle and selling 3 bottles at 100 baht, there had break-even point 114 bottles and 47 sets or 141 bottles respectively. The break-even point results could be used to help make decisions in production planning, profit planning, and also inventory management. Moreover, the production costs management needed to have controlling costs such as labor costs and packaging costs. The cost of production and selling expenses were not yet calculated such as damaged goods cost, production supervisors staffs costs, staffs costs in sale and finance, rent costs and packaging cost for selling. The production costs management still lacked inventory management and using of raw materials left over from production to generate more revenue.