A method for lining an existing pipe uses a tubular lining material comprising a flexible resin absorber impregnated therein with a liquid setting resin. One end part of the lining material is radially spread to form cut pieces. The cut pieces of the lining material are laid on a flange comprising a flexible resin absorber impregnated with a liquid setting resin. The flange and the cut pieces of the lining material are brought into pressure contact with a surface surrounding a pipe opening of the existing pipe before a step of evertedly inserting the lining material into the existing pipe. The liquid setting resin in the flange and the cut pieces of the lining material is cured to adhesively fix the flange and the cut pieces of the lining material to the surface surrounding the pipe opening of the existing pipe.
