A prosthetic hand includes a base frame, a holding device and a driving device. The base frame includes an outer side. The holding device includes a first holding finger and a second holding finger. The first grip finger includes a first proximal end portion and a first distal end portion. The driving device includes a driving mechanism and a first transmission mechanism. The first transmission mechanism is coupled to the driving mechanism and the first holding finger. The driving mechanism is configured to drive the first transmission mechanism to rotate the first holding finger about a first axis between a first closed position and a first open position. And rotating about a second axis between the first open position and an everted position. Thereby, a plurality of different usage states can be switched according to user requirements, thereby improving flexibility and convenience in use.一種義手，包含一基架、一握持裝置及一驅動裝置。基架包括一外側面。握持裝置包括一第一握持指及一第二握持指。第一握持指包含一第一近端部及一第一末端部。驅動裝置包括一驅動機構及一第一傳動機構。第一傳動機構連接驅動機構及第一握持指，驅動機構用以驅動第一傳動機構帶動第一握持指繞一第一軸線在一第一閉合位置與一第一張開位置之間旋轉，以及繞一第二軸線在第一張開位置與一外翻位置之間旋轉。藉此，能依照使用者需求切換多種不同的使用狀態，以提升使用上的彈性及便利性。
