The study on technical efficiency and productivity based on a smart watering system for growing salad vegetables in Ubon Ratchathani province aimed to compare the cost of production and returns between farmers who used the smart watering system and those who did not. Additionally, it aimed to study the technical efficiency of farmers using the smart watering system, to study changes in the productivity of farmers using the smart watering system, and prepare a guideline for developing the capacity of farmers using the smart watering system. Data were collected throughinterviews with 30 farmers who utilized the smart watering system innovation during the 2020-2021 farming year