The difference between the official hat chairs in the Qing Dynasty and the Republic of China is that there are both official hat chairs in the Ming and Qing Dynasties, but the styles are completely different, mainly reflected in the treatment of backboard, brain and armrest. The armrests of official hat chairs in Ming Dynasty were rarely decorated, while those of official hat chairs in Qing Dynasty were mostly decorated.

On the one hand, the official hat chair is mainly composed of seat surface, armrest, headrest and backrest. When we sit in the official hat chair, the weight is transferred from the legs and feet to the hips and thighs, and the weight is also distributed to the arms and head. From the front, the headrest and backrest of the official hat chair form an "S" shape, which is basically consistent with the spine curve of the human body. The headrest corresponds to the cervical vertebra, the backrest corresponds to the thoracic vertebra and lumbar vertebra, and the headrest is at the top.

On the other hand, the official hat chair also constructs the physical and mental health of "sitting". The backrest of the official hat chair is mostly at right angles to the seat surface, so people can only sit upright, which is conducive to developing a good sitting posture. Good sitting posture is conducive to the cohesion of energy and attention, and can also achieve the purpose of preventing neck and back pain. Good sitting posture can make breathing smooth, make impetuous mood easier to calm down, and also reflect people's mental outlook and inner temperament well.