The project of automatic watering machine with soil moisture has the aim to study the function of the device, Ardruino Real. Time, in these days, Clock LCD Relay technology development greatly. The cause of this party organizer, thus creating a automatic watering machine In order to benefit those who like to wake up the tree but don"t have the time to water the plants to the more comfortable and help increase the programming skills to control the board and various electronic devices. And learn how to solve the problem in the experiment to the circuit knowledge learning to take advantage of the experiment, which is highly desirable. Because the "automatic watering machine." Can water the plants in order to set, the result is When the plug power supply with automatic watering machine. Automatic watering machine, it shows the time on the screen. When the machine was watering period specified.