Abstract: A circular knitting machine includes lower bricks, guiding elements attached to the lower bricks and formed with a guiding groove extending like the profile of a peak, needles, upper bricks, hooks movably connected to the upper bricks. Each of the needles includes a rear edge, a front edge, a body extending from a head to a tail, and a fin extending from the body and being movable in the guiding groove of a related one of the guiding elements so that the needle is movable up and down relative to the guiding elements as the needle is movable around the guiding element. The head of each of the needles includes a first inclined edge extending downward from the rear edge, a second inclined edge extending toward the rear edge while extending downward from the first inclined edge, and a recess defined between the second inclined edge and the front edge.