PURPOSE: To realize an apparatus for manufacturing a paper vessel which can simply and rapidly cope with the manufacture of various types of paper vessels having different sizes.

CONSTITUTION: A sheet feeding mechanism 11A, a pasting mechanism 41A, a bending mechanism 61A, an adhering mechanism 71A and a molding mechanism 91A for operating the one side of a paper material are placed at one supporting unit 120A to be supported. A sheet feeding mechanism 11B, a pasting mechanism 41B, a bending mechanism 61B, an adhering mechanism 71B and a molding mechanism 91B for operating the other side of the material are placed at the other supporting unit 120B to be supported. One or both of the units 120A and 120B are uniaxially moved by a driver 130. Thus, the replacement of elements of the units and the alteration and the regulation of the mounting position of the units are eliminated, and the manufacture of various paper vessels having different sizes can be simply and rapidly coped with.