The invention discloses a cambered crucible used for high-temperature alloy special casting. The cambered crucible comprises a crucible main body and is characterized in that the crucible main body is provided with a hollow through hole; the hollow through hole comprises a cylindrical through hole main body; a plurality of arc-shaped grooves are formed in the inner surface of the through hole main body; the lower end of the through hole main body is a crucible outlet; the inner diameter of the crucible outlet is smaller than that of the through hole main body; and the lower end of the hollow through hole is connected with the crucible outlet through an arc-shaped step. The cambered crucible used for high-temperature alloy special casting belongs to the technical field of special casting, is applied to the technical field of high-temperature alloy special casting by structurally designing and preparing the crucible used for high-temperature alloy smelting, relates to the crucible design, the crucible preparation and the crucible structure in special casting of a high-temperature alloy casting, and has the advantages that the crucible of an inner cambered structure is applied to a high-temperature alloy special casting process, the safety coefficient is high, and the service life is long.