The utility model relates to a sitting posture correct auxiliary device, which is used for fixing on a seat and for wearing by human body, and comprises a fixing unit.The fixing unit comprises a fixing frame at the front chest of the human body and an adjusting belt group connected with the two ends of the fixing frame and located at the back of the human body. The fixing frame and the adjusting belt group define a set space for the human body to wear around. The fixing frame has a closed front end and an open rear end lower than the front end. The adjusting belt group is arranged on the back end for adjusting the The tightness of the fixed unit on the human body.When the human body is located in the set space, the front end of the fixed frame is located under the clavicle of the human body, and extends from the armpit to the adjustment belt group located at the back.一種坐姿端正輔助裝置，用於固定在一座椅上並供人體穿戴，其包含一固定單元。該固定單元包括一位於人體前胸處之固定架，及一連接該固定架二端且位於人體背部處之調整帶組，該固定架與該調整帶組圍繞界定出一供人體穿戴之套設空間，該固定架具有一封閉之前端，及一低於該前端且開放之後端，該調整帶組是設置於該後端上用以調整該固定單元穿戴於人體上之鬆緊度。當人體位於該套設空間中時，該固定架之前端是位於人體之鎖骨下方，並由腋下延伸至位於背部之調整帶組。
