The utility model discloses an intelligence rain making system, including humidity transducer, singlechip, relay, motor and water pump, humidity transducer sets up in the desired depth of soil, detects and export the humidity data signal of soil, the singlechip with humidity transducer communication connection, according to the switch data signal that humidity data output is corresponding of humidity transducer output, the relay with singlechip electric connection, the motor with relay electric connection, the relay basis the switch digital signal control of singlechip output the on off state of motor, the motor with water pump drive connects, humidity data signal with switch data signal is two kinds high level or low levels.