Abstract: A method for encapsulation of a liquid or meltable solid material, comprises the steps of forming a jet of a material to be encapsulated, simultaneously forming a coaxial jet of a capsule-forming material surrounding the jet of the material to be encapsulated, forming a coaxial jet of a heated circulating liquid surrounding the coaxial composite jet of the capsule-forming material and the material to be encapsulated, introducing the resultant coaxial triple jet into a flow of a cooling liquid to form capsules composed of a core of the material to be encapsulated and a capsule or coating film of the capsule-forming material. The heated circulating liquid has a temperature close to or higher than that of the capsule-forming material.