Method for preparing magnesium aspartate

Provided is an sspartic acid magnesium preparing method belonging to the chemical field, which is characterized in that, magnesium salts and sspartic acid are added in water so that partial or whole moisture is removed after reaction, the remains is added in a water soluble non-aqueous solvent to separate out solid, and the product is obtained through crushing and drying. Compared with the prior art, the invention has advantages of improved yield, reduced production cost, increased production efficiency and product quality.