To provide a productive and profitable method of recovery of a support by which the support is recovered in a state reusable for a support for a recording material from the recording materials in which coating films are formed on the supports using natural polymer binders or synthetic polymer binders.

In the method of recovery of polyester resin support comprising treating a recording material having at least one coating film layer on a polyester resin support with an alkaline treatment liquid to remove the coating film from the recording material and recovering the polyester resin support, the coating film is removed by applying a shear at a rate of 10-5-105/sec with the alkaline treatment liquid to the recording material in a sheet form in the treatment vessel and the material is wet-crushed into chips, washed, dehydrated and dried to recover the polyester support.