The invention discloses a production system and method for methylallyl alcohol. The production system is characterized by comprising a reactive distillation tower, an acetone product tower, an isopropanol recovery tower, a methylallyl alcohol light-component removing tower, a methylallyl alcohol product tower, a molecular sieve dehydration tower, a falling-film evaporator and a film evaporator. The refining method comprises the following steps: feeding each raw material into the reactive distillation tower, conveying a gas phase generated after a reaction into an acetone separation tower, and conveying a liquid phase to the falling-film evaporator; conveying a gas phase obtained after separation by the acetone separation tower into the acetone product tower, and returning a material at the bottom of the acetone separation tower to the reactive distillation tower; collecting acetone at the top of the acetone product tower, and conveying a material at the bottom of the acetone product tower to the isopropanol recovery tower; returning circulating acetone obtained at the top of the isopropanol recovery tower to the reactive distillation tower for participation in the reaction, and conveying a material obtained at the bottom of the isopropanol recovery tower to the methylallyl alcohol light-component removing tower; returning light components obtained at the top of the methylallyl alcohol light-component removing tower to the isopropanol recovery tower, and conveying a material obtained at the bottom of the methylallyl alcohol light-component removing tower to the methylallyl alcohol product tower; and collecting a methylallyl alcohol product from the top of the methylallyl alcohol product tower. The production system and method provided by the invention have the advantage of high conversion efficiency and high product purity.