A kind of adjustable knee joint equipment for making dynamic frequency holds seat, a main body base, a connecting joint comprising a joint and holds the linkage unit of seat and main body base, a reset unit, a siphunculus, air-flow adjusting unit and a power unit. Main body base forms an accommodating space. Linkage unit includes a buffer gear that accommodating space is divided into a upper chamber Yu a lower chambers. Reset unit perseverance provides buffer gear upward resilient bias. Siphunculus is connected to upper chamber and lower chambers and forms an adjustment portion. Air-flow adjusts unit and sets in what adjustment portion and part accommodating what siphunculus, to change the size in space in siphunculus to adjust the specific gas flow rate of siphunculus. To multisection type certain driving air-flow adjusts the specific gas flow rate that unit changes siphunculus to power unit, reaches accurately the effect of making dynamic frequency of knee joint equipment of adjustment.一種可調整作動頻率的膝關節裝置，包含一關節承座、一主體座、一連接關節承座與主體座的連動單元、一復位單元、一通管、一氣流調節單元，及一動力單元。主體座形成一容置空間。連動單元包括一將容置空間分隔為一上腔室與一下腔室的緩衝機構。復位單元恆提供緩衝機構向上的彈性偏移力。通管連通上腔室與下腔室並形成一調節部。氣流調節單元設於調節部且部分容置於通管內，用以改變通管內空間的大小以調節通管的氣體流率。動力單元用以多段式地驅動氣流調節單元改變通管的氣體流率，達到準確地調整膝關節裝置的作動頻率的功效。
