The gait posture assessment device of the present invention is provided with a main unit, an acceleration sensor for detecting acceleration of the main unit, and a control unit, and is a device for assessing the gait posture of a user wearing the main unit upon a predetermined region. A three-dimensional trajectory of the predetermined region excluding the component of movement in the direction of travel when walking has a pattern, wherein the pattern contains a plurality of feature points which define the features thereof. A controller, on the basis of the acceleration detected by an acceleration sensor, identifies positions of feature points of the trajectory which has been projected after removing the component of movement of the direction of travel from surfaces perpendicular to each of three axes orthogonal to one another, which are the vertical direction, the direction of travel, and the left and right directions (S103), calculates the values of characteristic factors of the trajectory on the basis of the identified positions (S104), and according to the correlation relation which has been obtained in advance between the values of the characteristic factors and the values of the indices indicating the gait posture, calculates values of the indices on the basis of the values of the calculated characteristic factors (S105), and assesses the gait posture on the basis of the calculated values of the indices (S112). Consequently, it is possible to perform a more precise and detailed evaluation of gait posture.La présente invention concerne un dispositif dévaluation de posture de marche qui est pourvu dune unité principale, dun capteur daccélération pour détecter laccélération de lunité principale, et dune unité de commande, et qui est un dispositif pour évaluer la posture de marche dun utilisateur portant lunité principale sur une région prédéterminée. Une trajectoire tridimensionnelle de la région prédéterminée exclut la composante de mouvement dans la direction d
