This invention provides a limb movement function evaluation method and an implementation system thereof. The implementation system comprises a limb fixing module, a limb guiding module, a driving module, a transmission mechanism module, an impedance detecting module and a movement function analyzing module. The limb fixing module fixes a first end point of a limb of a user. The driving module drives the limb guiding module via the transmission mechanism module to guide a second end point of the limb of the user so that the second end point moves relative to the first end point. The impedance detecting module is in turn connected to the driving module to measure the mechanical impedance presented by a driving point at a passive movement of the limb. The movement function analyzing module finally enables a movement path of the limb of the user, corresponding to the measured mechanical impedance, to form a limb movement function curve. Accordingly, a more accurate basis for rehabilitation evaluation is provided for a medical worker.本發明提供一種肢體運動功能評估方法及其實施系統。該實施系統包含肢體固定模組、肢體導引模組、驅動模組、傳動機構模組、阻抗檢測模組以及運動功能分析模組。肢體固定模組係固定使用者肢體之第一端點。驅動模組經由傳動機構模組驅動肢體導引模組來導引使用者肢體之第二端點，以讓第二端點相對於第一端點進行運動。阻抗檢測模組又連接驅動模組以量測肢體於被動運行時其驅動點呈現之機械阻抗。運動功能分析模組最後將測得之機械阻抗對應使用者肢體之運動路徑形成一肢體運動功能曲線。據此，以提供醫護人員更為準確的復健評估依據。
