The invention relates to a shoe-making mold, and discloses a mold device easy to demold. The mold device has a simple structure and is quickly demolded, and yield and production efficiency of injection molding is effectively improved, and the mold device is suitable for mass production and use. a telescopic cavity is arranged on an upper die core positioned above an upper mold cavity of the mold device; a brake rod is arranged on a shoe tree and can move up and down and penetrate into the telescopic cavity; a brake plate is fixedly connected to the end of the brake rod in the telescopic cavity; a telescopic base is arranged on the upper mold base, a telescopic rod capable of moving up and down penetrates through the telescopic base, and one end of the telescopic rod penetrates into the telescopic cavity and is connected with the brake plate; a pressurizing device is also arranged on the upper mold base, and a pressurizing end of the pressurizing device communicates with the telescopiccavity; and an exhaust valve is also arranged on the telescopic cavity.