A numerical generalization method for machine translation and system, computer and computer program thereof includes a training stage, in the training stage, a training corpus is processed in a special manner, and a normal training is performed without changing a structure of a neural network model; and a translation stage, in the translation stage, a generalization label in a translation is replaced with a normal translation. In the present invention, only the pre-processing and post-processing are changed to make the generalization technology applicable, which expands the application of the generalization technology in a neural network machine translation, and better adapts to the new machine translation model structure.