The under-film micro-spraying system is mainly an irrigation method that integrates under-film planting and micro-spraying technology. The cost of this system is smaller than drip irrigation investment and larger than furrow irrigation. It uses less water than furrow irrigation and more water than drip irrigation. When making the micro-spraying irrigation system under the membrane, pay attention to making it high at both ends and low in the middle. According to the input cost, it is better to use it in the cultivation of high-efficiency vegetables.