A foot prosthetic barrel adapted to be mounted on a broken foot of an amputation patient, the prosthetic barrel comprising a barrel body and at least one adjustment restraint. The can body includes a bottom wall portion and a surrounding wall portion extending from a periphery of the bottom wall portion. The surrounding wall portion is formed with at least one slit extending from the peripheral edge of the surrounding wall portion away from the peripheral wall portion toward the bottom wall portion, and the bottom wall portion and the surrounding wall portion together define a suitable for receiving the broken foot The accommodation space. The adjustment restraining member is disposed at the surrounding wall portion and located at the slit, and the adjustment restraint member is operable to adjust the size of the slit, thereby adjusting the volume of the accommodation space.一種足部義肢承筒，適用於安裝在一截肢患者的一斷足上，該義肢承筒包含一承筒本體及至少一調整拘束件。該承筒本體包括一底壁部及一自該底壁部周緣延伸的圍壁部。該圍壁部形成有至少一自該圍壁部遠離該底壁部的周緣朝該底壁部延伸的縫隙，該底壁部及該圍壁部共同界定出一適用於供該斷足容置的容置空間。該調整拘束件設置於該圍壁部並位於該縫隙處，該調整拘束件可被操作用以調整該縫隙的大小，藉此調整該容置空間的容積。
