A brain cannula set includes a male cylinder, a female cylinder, and a screw meshing assembly. The male cylinder has a long and slim channel, a conic portion at one end thereof, and a supporting flange portion at the other end thereof. The female cylinder is soft and iteratively flipable and foldable. The female cylinder has a shifting channel and an operational flange portion at one end thereof. The male cylinder is arranged in the inside of the female cylinder and the supporting flange portion of the male cylinder is pressing on the operational flange portion of the female cylinder. The conic portion of the male cylinder protrudes from the female cylinder. The screw meshing assembly is respectively engraved on the outer side of the male cylinder and the inner side of the female cylinder. The screw meshing assembly allows the male cylinder to be pushed toward an outlet direction of the female cylinder by folding and flipping the female cylinder.一種腦穿刺套組包括一公件筒、一母件筒與一螺嚙元件組;該公件筒具一細長通道、位於一端之一錐部與位於另端之一抵接固定部;該母件筒具一移動通道以及一端之一操作固定部;其中,該公件筒裝設於該母件筒內,該公件筒之該抵接固定部係抵接至該母件筒之該操作固定部,且該公件筒之錐部突伸出該母件筒之外;該螺嚙元件組刻製於該公件筒外部、與該母件筒內部;該螺嚙元件組可藉摺該母件筒將該公件筒往該母件筒之一出口方向推送。10‧‧‧公件筒12‧‧‧細長通道15‧‧‧抵接固定部30‧‧‧母件筒
