The invention relates to a casting drawing device for sand mold casting and an automatic casting drawing method thereof. The casting drawing device comprises a bottom plate, a lifting device, a clamping device and four supporting columns. The lifting device is mounted on the upper end face of the bottom plate, the supporting columns are symmetrically mounted on the upper end face of the lifting device, and the clamping device is mounted on the upper end faces of the supporting columns. According to the casting drawing device for sand mold casting and the automatic casting drawing method thereof, the difficult problems that as for existing sand mold casting, operation for taking out a cylindrical casting from molding sand is complicated, the cylindrical casting cannot be well fixed, the side face of the casting cannot be cleared while the casting is taken, and the casting cannot be lifted from the lower end of the casting can be solved, and the functions of integral demolding and clearing of the cylindrical casting can be achieved.