A kind of sense of equilibrium's assessment device includes a platform, number gravity sensor and the computing device stood for a testee. The grade gravity sensors are mounted on the platform, sense the gravity born along a vertical direction respectively. The computing device has the communication unit for capturing aforementioned gravity, the processing unit being electrically connected with the communication unit, and the display unit being electrically connected with the processing unit, the processing unit is according to aforementioned gravity, calculate coordinate position, gravity motion track, gravity motion path length, the gravity motion path velocity of center of gravity, and area is formed by by barycenter trajectory and obtains an area of base, and obtains an equilibrium index and shows the what display unit. Thereby, a kind of simple structure, easy to use, quick and inexpensive sense of equilibrium's assessment tool are provided.一種平衡感評估裝置,包含供一受測者站立的一平台、數重力感測器,及一計算裝置。該等重力感測器安裝在該平台,分別感測沿一垂直方向所承受的一重力。該計算裝置具有擷取前述重力的一通訊單元、與該通訊單元電連接的一處理單元,及與該處理單元電連接的一顯示單元,該處理單元根據前述重力,計算重心的座標位置、重心移動軌跡、重心移動軌跡長度、重心移動軌跡速度,及由重心軌跡所形成的面積獲得一基底面積,並獲得一平衡指數顯示於該顯示單元。藉此,提供一種構造簡單、使用方便、快速且低成本的平衡感評估工具。