The utility model discloses a field irrigation system, include the water source, be located the maintenance room and the irrigation network of water source top, it sets up including the end of intaking to irrigate the network inlet tube, house steward and connection in the water source inlet tube and house steward's water pump, the last gate valve no. 1 that sets up of house steward, house steward passes through two branch pipes of tee junction, 90 corner joint outlet pipes are crossed to every lateral duct, the position of branch pipe is higher than the position of outlet pipe sets gradually gate valve no. 2, water gauge, inlet and outlet valve and manometer on the shown branch pipe. This irrigation system is convenient to be examined and repaired irrigating to set up, sets up inlet and outlet valve on the branch pipe on this irrigation system in addition, this inlet and outlet valve simple structure, and the leakproofness is good, and long service life can effectively get rid of the pipeline intrinsic qi body, can also avoid the pipeline damaged by the negative pressure.