To provide a method for reutilization of waste laminated paper, etc., by which cellulose can readily be taken out from synthetic resin laminates or aluminum foil laminated paper in which good quality cellulose is used, and be reused as a raw material for good quality paper and the remainder can be formed as gel-like fuel.

This method for reutilizing waste laminated paper, etc., is constituted of a heating and boiling step for heating and boiling laminated paper or general waste paper used as a container, etc., for beverage and foods, etc., with an acidic solution or waste and allowing the laminated paper and the general waste paper to stand for a definite time, a crushing step for crushing the heated and boiled material after passing through the heating and boiling step by a mixer, a metal or resin removing step for removing metal or resin material by gravity concentration from crushed material solution after passing through the crushing step and a cellulose separation step for separating cellulose by mesh selection from a solution separated in the metal or resin-removing step.