A method for manufacturing a fixture of a head for fixing magnetic field generating means, comprising the steps of: taking an image of a head of an examinee along many parallel planes to slice the head of the examinee, the image being an MRI image; adjusting a relation between a coordinate system of the image and a coordinate system to be built up by predetermined position grasping means to grasp a position and a direction of the magnetic field generating means, and superimposing the position and direction data of the movable magnetic field generating means with respect to the image with each other; fixing the position and the direction data of the magnetic field generating means at a specific point of time in the image, in which the position and direction data of the movable magnetic field generating means are superimposed with each other, and recording them together with the image and thereby creating an MRI three-dimensional image representing a positional relation between the brain, the cranium, and the magnetic field generating means in said fixing step as a position displaying three-dimensional image; deciding the data showing a relative relation between the surface of the head of the examinee and the magnetic field generating means based on first coordinate data representing the surface of the head of the examinee that is included in the created MRI three-dimensional image and second coordinate data representing the position and the direction of the recorded magnetic field generating means; and forming a fixture of a head, accompanied by a magnetic field generating means fixing part to recreate a relative position of the recorded magnetic field generating means with respect to the surface of the head of the examinee based on the data showing the above-described relative relation, for closely attaching to the surface of the head of the examinee, wherein a relative positional relation of the magnetic field generating means represented by the position and the direction data of the magnetic field generating means to be fixed in the recording step with respect to the head of the examinee is a positional relation so that the highest point of an intensity of an electric current to be induced by a magnetic field to be generated by the magnetic field generating means is constantly arranged on a target spot of a diameter not more than 10 mm, which depends on each of the examinees and is located in a primary motor area of a brain within a cranium, and a direction of a magnetic field to be generated by the magnetic field generating means and a direction of the target spot are made into a fixed relation. taking an image of a head of an examinee along many parallel planes to slice the head of the examinee, the image being an MRI image; adjusting a relation between a coordinate system of the image and a coordinate system to be built up by predetermined position grasping means to grasp a position and a direction of the magnetic field generating means, and superimposing the position and direction data of the movable magnetic field generating means with respect to the image with each other; fixing the position and the direction data of the magnetic field generating means at a specific point of time in the image, in which the position and direction data of the movable magnetic field generating means are superimposed with each other, and recording them together with the image and thereby creating an MRI three-dimensional image representing a positional relation between the brain, the cranium, and the magnetic field generating means in said fixing step as a position displaying three-dimensional image; deciding the data showing a relative relation between the surface of the head of the examinee and the magnetic field generating means based on first coordinate data representing the surface of the head of the examinee that is included in the created MRI three-dimensional image and second coordinate data representing the position and the direction of the recorded magnetic field generating means; and forming a fixture of a head, accompanied by a magnetic field generating means fixing part to recreate a relative position of the recorded magnetic field generating means with respect to the surface of the head of the examinee based on the data showing the above-described relative relation, for closely attaching to the surface of the head of the examinee, wherein a relative positional relation of the magnetic field generating means represented by the position and the direction data of the magnetic field generating means to be fixed in the recording step with respect to the head of the examinee is a positional relation so that the highest point of an intensity of an electric current to be induced by a magnetic field to be generated by the magnetic field generating means is constantly arranged on a target spot of a diameter not more than 10 mm, which depends on each of the examinees and is located in a primary motor area of a brain within a cranium, and a direction of a magnetic field to be generated by the magnetic field generating means and a direction of the target spot are made into a fixed relation.