The invention discloses a multifunctional irrigation machine, and belongs to the field of water-saving irrigation. The multifunctional irrigation machine comprises a machine framework, a hose reel, a support, a travelling tyre, a water inlet hose and a water outlet hose; the hose reel is arranged above the machine framework, and the travelling tyre and the support are arranged below the machine framework; and one end of the water inlet hose is connected with one end of the water outlet hose, a metering valve is arranged at the other end of the water inlet hose, and a ball valve and a multifunctional connecting device are sequentially arranged at the other end of the water outlet hose. The irrigated water is metered and controlled through the metering valve, and the multifunctional connecting device can be quickly connected and used with multiple efficient water-saving irrigation devices, so that diversified small water sources such as water in deep wells of highlands, water in rain collecting cellars of gentle slopes and terraces, water in shallow wells of ravines, water in small rivers and ponds and the like are fully and efficiently utilized. In conclusion, the multifunctional irrigation machine has many advantages of small volume, low manufacturing cost, quick connection, wheel-type movement, hose reeling, metering irrigation and control and the like.