The height adjustment structure of the headrest of the inverted machine mainly comprises a frame body and an inverted plate frame pivoted on the frame body, and a set of foot fixing frames arranged under the inverted plate frame, the two sides of the frame body Each of the sets is provided with a handle, and a headrest is arranged above the inverted stand for the user to lie on the inverted stand, fix the foot to the foot fixed frame, and hold the handle for the inverted movement； wherein The top edge of the inverted shelf is provided with a fixing portion, and the headrest is provided with a positioning portion coupled to the fixing portion, so that the positioning portion can move up and down along the fixing portion. When using the inverted machine, the headrest can be adjusted upwards or downwards according to the user's needs, and positioned at an appropriate height for the user's head to lean against, thereby making the inverted machine more practical.一種倒立機之頭枕高度調整結構，主要係包含一架體及一樞設於架體之倒立板架，以及一組設於倒立板架下方之腳部固定架，該架體的兩側邊係各設有一把手，並於該倒立板架上方設有一頭枕，以供使用者躺在倒立板架上，將腳固定至腳部固定架，並以手握把手進行倒立運動；其中，該倒立板架的頂緣係設有一固定部，該頭枕係設有結合於該固定部之定位部，使該定位部可沿該固定部上、下移動。俾於使用倒立機時，得以依使用者的需求將該頭枕向上或向下調整後，定位於適當高度，以供使用者頭部倚靠，從而使倒立機更具實用價值。
