A massage motion device and a head scratching massager. The massage motion device comprises a mounting base, and a pair of swing arm assemblies. The swing arm assemblies are mounted on the mounting base each of the swing arm assembly comprises a rotating disc and a swing arm mechanism (400) the swing arm mechanism (400) comprises a swinging arm (410), and a connecting piece (420) rotatably connected with the swinging arm (410) by means of a second rotating shaft (620) a connecting arm (421) is provided with a strip-shaped hole (4211) matched with the second rotating shaft (620) the opening direction of the strip-shaped hole (4211) is parallel to an axis of the second rotating shaft (620) the length extension direction of the strip-shaped hole (4211) is set to be parallel to an extension direction of a guide pillar (422). On the basis that a scratching action of opening and closing of a human hand is imitated, because the length extension direction of the strip-shaped hole (4211) is set to be parallel to the extension direction of the guide pillar (422), the action force parallel to the extension direction of the guide pillar (422) is prevented from acting on the whole connecting piece (420), so that a jumping phenomenon of the connecting piece (420) in a direction parallel to the extension direction of the guide pillar (422) is avoided and stability is enhanced.La présente invention concerne un dispositif de mouvement de massage et un dispositif de massage pour grattage de la tête. Le dispositif de mouvement de massage comprend une base de montage, et une paire densembles de bras pivotants. Les ensembles de bras pivotants sont montés sur la base de montage chacun des ensembles de bras pivotants comprend un disque rotatif et un mécanisme de bras pivotant (400) le mécanisme de bras pivotant (400) comprend un bras pivotant (410), et une pièce de liaison (420) reliée de manière rotative au bras pivotant (410) au moyen dun second arbre rotatif (620) un bras de liaison (4
