The present invention discloses a helmet type massage device and a helmet thereof, in which the helmet includes a first helmet body. The first helmet body comprises a first left helmet body and a first right helmet body butt-jointed to each other, in which the first left and right helmet bodies are respectively provided with first left and right racks. The helmet further comprises an adjusting device, in which the adjusting device comprises a base, a gear, a ratchet body having ratcheting teeth and a rotary knob that drive the ratchet body to rotate. The base is mounted to the docking location between the first left and right helmet bodies. The first left and right racks are engaged with the gear. The ratchet body is positioned on the gear. The rotary knob is mounted on the ratchet body. The base has a circle of fastening teeth. The ratchet body has a rotation state and a still state. To adjust the size of head space, the rotary knob is rotated forward or reversely so that the rotary knob will drive, through the ratchet body, the gear to rotate and the gear moves the two adjacent docking ends away from each other or to get close to each other so as to change the size of the head space.本發明係揭露一種頭盔式按摩器及其頭盔,其中頭盔包含第一盔體,第一盔體包含對接的第一左盔體和第一右盔體,其中第一左、右盔體分別具有第一左、右齒條。頭盔更包含調節裝置,其中調節裝置包含基座、齒輪、具有棘輪齒的棘輪體及帶動棘輪體轉動的旋鈕。其中基座係設置於第一左、右盔體的對接處,第一左、右齒條均與齒輪嚙合,棘輪體係定位在齒輪上,旋鈕安裝在棘輪體上,基座具有一圈鎖緊齒,棘輪體具有轉動狀態和靜止狀態。需要調節頭部空間大小時,正轉或反轉旋鈕,旋鈕通過棘輪體帶著齒輪轉動,齒輪帶著兩個相鄰的對接端相對遠離或靠近,從而改變頭部空間大小。
