Provided is a process for producing a processed product which is produced by continuously heating/molding a fluid raw material comprising a protein, a lipid and water. Specifically, provided is a method for heating a material of interest continuously in an internal heating mode while moving the material in a tube, which is characterized by comprising (a) placing the tube vertically or almost vertically (the tilt of 15 degree or less) and carrying out the heating/molding of the mixture while feeding the mixture upward from the bottom in the tube and/or (b) carrying out the heating/molding of the mixture while rotating the tube by the center line taken in the direction of the length of the tube as the rotation axis. The internal heating mode is preferably microwave heating, Joule heating or high-frequency heating. More specifically provided is a process for producing a processed protein food, in which a material to be heated is a mixture comprising a protein, a lipid and water, and which comprises molding the mixture having fluidability by thermally coagulating the mixture continuously by an internal heating mode while moving the mixture in a tube, and which is characterized by employing the above-mentioned heating/molding process.L'invention porte sur un procédé de fabrication d'un produit traité qui est fabriqué par chauffage/moulage en continu d'une matière première fluide comprenant une protéine, un lipide et de l'eau. De manière spécifique, l'invention porte sur un procédé de chauffage d'une matière d'intérêt en continu dans un mode de chauffage interne tout en déplaçant la matière dans un tube, lequel procédé est caractérisé en ce qu'il comprend les étapes consistant à : (a) placer le tube verticalement ou presque verticalement (l'inclinaison de 15 degrés ou moins) et réaliser le chauffage/moulage du mélange tout en distribuant le mélange vers le haut à partir de la partie inférieure dans le tube et/ou (b) réaliser le chauffage/moulage du mélange tout en faisant
