Abstract: A pinching tube cutting device to transversely cut a tube made of a plastic material. The device consists of two handles attached to each other in a pivoting movement around an axis wherein one handle contains a cutting blade at its end while the end of the other handle contains a hollow seat to receive the tube. The blade has two sharp edges making a salient angle between 120° and 150°, in such a manner that an angle (&agr;) formed by the sharp edge furthest from the axis and a line passing through the point of the blade and the axis is larger than the angle (&bgr;) formed by the other sharp edge and the line. The point of the blade describes a circular arc which cuts the segment of a line which joins the axis and the center of the tube with the largest diameter possible to rest in the seat.