The invention discloses a MDOF (multi-degree of freedom) accurate trolley for ejection for water plugging. The trolley comprises a hydraulic source, track frames, a horizontal rotating chassis, a bigarm support, an auxiliary carriage, lifting support rods, stretch adjusting rods, adapters 8, a power head mast, a carriage, a bracket, a grouting rod and a main carriage. The trolley can be flexiblyadjusted at multiple angles in urban rail transit construction, performs effective grouting adjustment according to the position of water-rich stratum and guarantees construction efficiency and construction effect. The trolley can effectively realize rotation, push-and-pull and walking actions, and can effectively adapt to different stratum conditions; a hydraulic source can adopt an internationaloriginally imported hydraulic pump; a rotating disc and a hydraulic oil cylinder are combined for grouting hole positioning, an angle adjusting action of each hole position is realized rapidly and conveniently, and the whole machine walking adopts track walking. The whole trolley has good construction view, safety of constructors is greatly improved, and operation intensity is reduced.