The invention discloses a low-temperature and high-magnetic-strength oriented silicon steel production process. The production process comprises the technological flows of iron smelting-steel smelting-blank casting-hot rolling of silicon steel strips-normalizing treatment-acid washing-trimming of the steel strips-cold rolling-decarburization-nitriding-magnesium oxide coating-high-temperature heat treatment of a cover furnace-stretching-finishing-packing and marking-warehousing of finished products. The low-temperature and high-magnetic-strength oriented silicon steel production process is adopted to produce oriented silicon steel; the component content ratio reaches about 95%; a traditional production process adopts MnS as a main inhibitor; a main inhibitor A1N of the production process has a dissolving temperature of 1250 DEG C; the hot-rolling heating temperature is reduced; and the carbon content of silicon steel is directly once reduced from 400 PPm to 30 ppm through decarburization and annealing to reach the international advanced level.