The invention provides a new method for preparing cyclodextrin (meth)acrylate, and relates to the field of a high-molecular monomer cyclodextrin derivative and particularly relates to cyclodextrin acrylate and a new preparation method thereof. The new method disclosed by the invention comprises the following steps: stirring and reacting in the presence of a catalyst by using cyclodextrin and an acylation reagent such as acryloyl chloride, methacryloyl chloride and the like; performing alcoholysis; precipitating; purifying by using methanol; performing vacuum drying to obtain cyclodextrin (meth)acrylate. The product can be polymerized with a monomer such as acrylic acid, or acrylamide and the like to obtain a high-molecular polymer like gel, and the high-molecular polymer can be applied to a medicinal preparation or an environmental material. The technical points of the new method disclosed by the invention are as follows: the operation is simple, convenient, rapid and free of pollution, energy is saved, the yield of the prepared product is high, the production cost is greatly lowered, and the new method is suitable for industrial production.