Abstract: Taking Inner Mongolia Xing′an league Jalaid banner 1 300 hm2 land using surface water as water sprinkler irrigation engineering as an example，engineering design of a single center pivot irrigation machine which control area was 33.3 hm2 was discussed from several aspects included water source engineering design，selection of pipe network system layout，water pipe diameter determination，work regulations，hydraulic calculation and water pump.Practice of 3 years proved that irrigation water use coefficient increased from 0.65 to 0.85，average gross water used from 5 700 m3hm2 down to 4 350 m3hm2，average annual savings of water for 1.8 million m3.