The invention discloses a method for manufacturing a corrosion-resistant double-metal pipe by an expendable pattern shell molding process. The method comprises the following steps of: coating an expandable polystyrene (EPS) foam mold on the inner wall of an ordinary carbon steel or alloy steel pipe; putting the ordinary carbon steel or alloy steel pipe and the EPS foam mold into solution of silica sol for dip coating; scattering molding sand on the dipped mold to prepare a shell; casing and shaping the mold and baking the mold at the high temperature; and pouring solution of a nickel-based alloy at the temperature of between 700 and 900 DEG C, cooling and clearing falling sand to obtain the corrosion-resistant double-metal pipe. The corrosion-resistant double-metal pipe produced by the method has the advantages that: alloy components of inner and outer layers can be accurately controlled, the inner and outer layers are difficult to separate, the performance meets the requirement of anair pollution index (API) standard, large-caliber pipes can be produced, the production cost is greatly lowered and high economic benefit can be achieved.