The invention provides a needle depth adjustment structure of a blood collection device.It includes: an ontology,An opening is formed at one end；A slider.It is connected to one end of the body.The slide block is provided with a moving element at one end of the holding space.And the brake element is provided with a stop part and a first elastic unit；A pivoting element,It is pivoted on the second sidewall.The pivoting element is eccentrically provided with a stop corresponding to the stop；By way ofAccording to the skin condition of the user, the pivoting element can be adjusted.To adjust the movable distance of the brake element,By this way, the effect of fine-tuning the depth of blood collection can be achieved.It can also reduce the pain during blood collection.And the pivoting element is arranged at the side end of the body.By making it easier for users to operate and adjust the depth of blood collection,And it can prevent injury caused by pricking of blood sampling needle during adjustment.In order to improve the convenience and safety of the overall operation of the creation；Also,A container is arranged at the end of the body.By accommodating blood sampling needles and test pieces,In order to facilitate the user to carry and carry out blood test.本創作係提供一種採血裝置之針刺深度調整結構，其包含：一本體，其一端形成一開口；一滑塊，其係組接於該本體一端，滑塊於該容置空間一端設有一掣動元件，且該掣動元件設有一止擋部及第一彈性單元；一樞轉元件，其係樞設於該第二側壁，該樞轉元件偏心設置有一對應於該擋塊之止擋件；藉之，本創作係可依據使用者之皮膚狀況而微調樞轉元件，以調整掣動元件之可動距離，藉此達致微調採血深度之功效，並能降低採血時之疼痛感，且樞轉元件係設置於本體之側端，藉可利於使用者操作及調整採血深度，並可防止於調整過程中受採血針之針扎而受傷，以提升本創作整體於操作時之便利性及安全性；再者，本體末端設有容器，藉可利於容置採血針及試片，以利於使用者攜帶並進行採血檢測。
