The present invention relates to the technical field of cloud computing. Disclosed is an intelligent control system for automatic irrigation of a garden based on cloud computing, comprising a sensor module, wherein an output end of the sensor module is electrically connected to an input end of a data collection module; an output end of the data collection module is electrically connected to an input end of an A/D converter; an output end of the A/D converter is electrically connected to an input end of a data transmission module; and an output end of the data transmission module is electrically connected to an input end of a microprocessor. The intelligent control system for automatic irrigation of a garden based on cloud computing can realize, by means of setting up a cloud server, precise automation control during the irrigation of a garden, such that the problem of artificial mechanical irrigation during the irrigation of the garden is solved, and randomness caused by the artificial mechanical irrigation i