A detachable frame of a light-small sprinkling machine for precise irrigation, which belongs to a key equipment in modern agricultural irrigation. The detachable frame of a light-small sprinkling machine for precise irrigation comprises angle steel pieces, tiepieces, support bars, support upright rods, top truss with slots, and wheels, wherein, the components of the frame are connected through threaded connections, so that the frame can be disassembled and removed easily. The distance between sprinkler heads and the mounting height of the sprinkler heads may be changed by means of free movement of turning hooks in the top truss with slots. The number of spans of the truss of the machine can be selected according to the topographic structure and can be changed by means of threaded holes in the two ends of the top truss with slots, and thereby the length of the truss can be changed. The irrigation sprinkling machine has high adaptability, and achieves even sprinkling distribution. The irrigation sprinkling machine is stable, light, easy to disassemble and remove, and solves the problems of poor mobility and material waste of light-small irrigation sprinkling machines in the prior art. Employing low-pressure sprinkler heads, the irrigation sprinkling machine achieves improved sprinkling evenness and saves power. Utilizing the turning effect of movable swivel shafts, the irrigation sprinkling machine can be turned to any direction freely, and thereby is more flexible.