The invention relates to the technical field of metal smelting, and provides a production technology of low-phosphorous stainless steel. The production technology of the low-phosphorous stainless steel comprises the steps that solid metal is placed into a non-vacuum induction furnace to be melted, and the carbon content in obtained molten steel is adjusted to be greater than or equals to 1.0%; themolten steel is blended into an AOD furnace to be blown, and the blowing temperature is controlled at 1550 DEG C-1600 DEG C; slag making materials are added into the molten steel for slagging in theblowing process, and the target alkalinity is 3.5-4.5; gas of oxygen and nitrogen is mixed for blowing, and the gas flow is controlled to 800-1000m<3>/h; blowing is stopped after 40-50 minutes of blowing, and the phosphorus content in the molten steel is analyzed by sampling; and when the phosphorus content is less than or equals to 0.003%, oxidizing slag in the furnace is removed, and then conventional smelting is carried out on the obtained low-phosphorus molten steel. The phosphorus content in the obtained stainless steel is lower than 0.015%, and production of stainless steel such as nuclear power and chemical industry is met. Compared to a traditional dephosphorization technology, the production technology of the low-phosphorous stainless steel greatly saves energy consumption and reduces production cost, and the dephosphorization efficiency is high.