The invention discloses equipment for injecting saline water into balance rings of washing machines. Water injecting holes for injecting the saline water into internal spaces of the balance rings are formed in the balance rings. The equipment comprises a framework and a limit device. The limit device is arranged on the framework; a CCD (charge coupled device) vision system which is connected with a processor is further arranged on the framework and is positioned on a side wall of a saline water injecting device, the saline water injecting device can be driven by a driving device to move along X, Y and Z axes in the framework, and an appropriate quantity of saline water can be injected into the internal spaces of the balance rings via the water injecting holes. The equipment has the main advantages that the equipment is simple and exquisite in structure, water injecting openings can be accurately positioned by the CCD vision system, two water outlets are formed in the outer circumferential surface of each water injecting head, accordingly, the saline water can flow into the internal spaces of the balance rings from side wings, and the water filling efficiency can be improved; the equipment is convenient to operate, and the production cost can be reduced.