The invention belongs to the technical field of agricultural chemical fertilizers and in particular relates to a stable nitryl and sulfenyl calcium and magnesium fertilizer production method. The method comprises the following step of: by taking fine particle ammonium sulfate, calcium carbonate, magnesium carbonate and ammonium nitrate solutions as primary raw materials, and adding a pH adjustor, an inter dryer and trace elements to produce the stable nitryl and sulfenyl calcium and magnesium fertilizer. The formula and production conditions of the compound fertilizer are as follows: the raw materials comprise 10-20% of ammonium sulfate, 8-20% of calcium carbonate, 8-20% of magnesium carbonate and 50-75% of ammonium nitrate; the pH adjustor accounts for 0.5-5% of the total mass of the product; the internal dryer accounts for 0.5-5% of the total mass of the product; the mixed materials are reacted for 3-10min at 150-200 DEG C; and granulation and cooling are performed to obtain the nitryl and sulfenyl calcium and magnesium fertilizer which is stable in performance.