The invention relates to a method for purifying a reaction product containing 3-aminopropanol, said reaction product being produced in the reaction of ethylene cyanohydrin with hydrogen in the presence of ammonia, characterized in that the reaction product containing 3-aminopropanol is distilled in two or more stages, wherein the ammonia content of the reaction product containing 3-aminopropanol is 1 wt% or less before the reaction product is introduced into the first distillation stage and the ...