The utility model discloses a demolding structure of a mold. The mold internally comprises a male mold installation plate which is provided with fixing plates; a push plate is arranged in front of the fixing plates; a female mold plate is arranged in front of the push plate; the fixing plates are provided with a plurality of insert pins penetrating through the push plate; the push plate is internally provided with insert pin holes through which the insert pins pass; machine bench connecting rods capable of pushing the push plate to move front and back are arranged in back of the push plate, penetrate through the male mold installation plate and the fixing plate, and are connected in back of the push plate; the push plate is also provided with air blowing holes; and the air blowing holes run through the push plate and achieve the insert pin holes, and are externally provided with air blowing joints. The demolding structure of the mold, provided by the utility model, can enable products to fall off automatically, eliminate the step of taking out manually, shorten the forming cycle, and improve the machine bench yield, and workers only need to check and package, so that the production efficiency can be greatly improved.