The invention discloses a production method of a Mn-Ce/Al2O3/cordierite low-temperature denitrification catalyst. The production method of the Mn-Ce/Al2O3/cordierite low-temperature denitrification catalyst comprises the following steps: producing steeping liquor containing aluminium, manganese and cerium: under a water bath condition, mixing aluminium nitrate nonahydrate, cerium nitrate hexahydrate and a manganese nitrate solution with a mass ratio of 50%, dissolving a mixed solution in deionized water, adding excessive urea, and then continuously adding deionized water until the volume of steeping liquor meets the steeping requirements; conducting steeping: adding cordierite into the produced steeping liquor for soaking; and conducting drying and calcining: taking out steeped cordierite,placing the steeped cordierite in an oven for drying, and after drying is completed, calcining a product in a temperature-programmed muffle furnace. The Mn-Ce/Al2O3/cordierite low-temperature denitrification catalyst is further disclosed. By means of the production method of the denitrification catalyst, the active components can be dispersed on a coating better, so that the performance of the catalyst is improved.