The invention relates to a respirator and softener assembly for a dish washing machine. The assembly comprises a body composed of an upper respirator and softener piece and a lower respirator and softener, a salt cavity and a resin cavity are formed in the body and adjacent to each other in a spaced mode, a water inlet device interface is arranged at the position, corresponding to a softened water outlet end of the resin cavity, on the body, and a respirator interface is arranged at the position, corresponding to the salt cavity, on the body. By means of the innovated design, the respirator, the water inlet device and a water softener are integrated to form the respirator and softener assembly, space is greatly saved, the respirator and softener assembly can be vertically installed in the dish washing machine, and the problem that the bottom spaces of a water tank dish washing machine, a table type dish washing machine, a drawer dish washing machine, a small dish washing machine and the like are small and accordingly water softeners cannot be installed is solved.