The invention discloses an image reconstruction method for a high-energy double-energy CT system, which comprises the following steps: scanning an object by using high-energy double-energy rays to acquire a high-energy double-energy projection value calculating a base material coefficient projection value corresponding to the double-energy projection value according to a pre-constructed lookup table or by a method for resolving and solving a equations set and acquiring a distribution image of the base material coefficient based on the projection value of the base material. The method solvesthe problem of high-energy double-energy reconstruction, provides more effective substance identification and contraband inspection means, and greatly improves the precision and efficiency of safety inspection.
