Disclosed is a self-propelled type crawler belt type water saving irrigation machine which belongs to agricultural machinery. An n-shaped rack assembly formed by a left rack and a right rack is equipped with dividers, a cab, a hydraulic oil tank, a main water tank, a walking crawler belt assembly, a hydraulic oil pump and a motor, wherein a right side water tank and N middle water tanks are hanged on the right rack, a left side water tank is hanged on the left rack, the hydraulic motor is installed on a drive shaft of the walking crawler belt assembly, the motor is connected with the hydraulic oil pump and a booster fan, the booster fan is communicated with the main water tank through a high pressure air pipe, the main water tank is communicated with the right side water tank through a water pipe, the right side water tank is communicated with the N middle water tanks and the left water tank through a distributive pipe, drain valves are fixedly arranged on the lower portions of the rear sides of the right water tank, the left water tank, and the N middle water tanks, the hydraulic oil tank, the hydraulic oil pump, the hydraulic motor and a manual multichannel control valve are communicated with one another through a hydraulic oil pipe. The self-propelled type crawler belt type water saving irrigation machine is simple and reasonable in structure, low in power consumption, good in water supply quality, and high in working performance.