The utility model relates to a gasifying device for multi-dimension spray of coal water slurry. The gasifying device for multi-dimension spray of coal water slurry comprises a coal water slurry preparing mechanism, a gasifying mechanism and a washing mechanism, wherein the gasifying mechanism comprises a gasifying furnace composed of a gasifying chamber and a chilling chamber, a main nozzle is axially arranged at the top of the gasifying chamber, a plurality of auxiliary nozzles are symmetrically arranged in pairs of even number along circumferential direction in the middle and upper parts of the gasifyign chamber, and a tapered outlet stretching into the chilling chamber is arranged in the bottom part of the gasifying chamber; a coal gas outlet is arranged in the upper part of the chilling chamber, and chilling water at a certain liquid level is stored at the lower part of the chilling chamber; a chilling ring and a downcomer are sequentially arranged at the lower part of the tapered outlet of the gasifying chamber, a plurality of water outlets with certain slant angle are uniformly arranged in the inner annular wall of the chilling ring along circumferential direction, and the outlet end of the downcomer extends below liquid level of the chilling chamber; the washing mechanism comprises a washing tower communicated with the coal gas outlet of the chilling chamber by virtue of a washing device, and the water outlet of the washing tower is respectively communicated with the washing device and the chilling ring by virtue of a chilling water pump. The gasifying device for multi-dimension spray of coal water slurry can be used for solving the problems that concentration of prepared slurry is low, a brick on the apex of arch is corroded and coal slurry atomizing effect is poor in the prior art.