An ice making mold for making transparent ice, wherein the ice making mold comprises: a base having a first body, the first body is provided with a first water storage chamber, and an upper cover having a second body, the second body is provided with a second water storage chamber, the second water storage chamber being a hemispherical chamber and corresponding to the first water storage chamber; wherein the thermal conductivity of the first body is greater than the thermal conductivity of the second body, and wherein when the upper cover is combined with the base, the first water storage chamber and the second water storage chamber form a chamber for containing water for making transparent ice; wherein the first water storage chamber comprises a first hemispherical chamber located at a lower portion and a cylindrical chamber located at an upper portion, wherein the first hemispherical chamber and the cylindrical chamber communicate with each other, wherein when the upper cover of the ice making mold is combined with the base, a first edge of the first hemispherical chamber of the base and a second edge of the second water storage chamber of the upper cover abut against each other to form a spherical chamber, the water in the first water storage chamber entering the spherical chamber; wherein when freezing the ice making mold the water in the spherical chamber gradually freezes from the first hemispherical chamber toward the second water storage chamber to form a transparent ice ball; wherein a volume of water entering the spherical chamber accounts for 90% of the volume of the spherical chamber; and wherein an overflow port is provided at an upper end of a wall of the cylindrical chamber. a base having a first body, the first body is provided with a first water storage chamber, and an upper cover having a second body, the second body is provided with a second water storage chamber, the second water storage chamber being a hemispherical chamber and corresponding to the first water storage chamber; wherein the thermal conductivity of the first body is greater than the thermal conductivity of the second body, and wherein when the upper cover is combined with the base, the first water storage chamber and the second water storage chamber form a chamber for containing water for making transparent ice; wherein the first water storage chamber comprises a first hemispherical chamber located at a lower portion and a cylindrical chamber located at an upper portion, wherein the first hemispherical chamber and the cylindrical chamber communicate with each other, wherein when the upper cover of the ice making mold is combined with the base, a first edge of the first hemispherical chamber of the base and a second edge of the second water storage chamber of the upper cover abut against each other to form a spherical chamber, the water in the first water storage chamber entering the spherical chamber; wherein when freezing the ice making mold the water in the spherical chamber gradually freezes from the first hemispherical chamber toward the second water storage chamber to form a transparent ice ball; wherein a volume of water entering the spherical chamber accounts for 90% of the volume of the spherical chamber; and wherein an overflow port is provided at an upper end of a wall of the cylindrical chamber.