The utility model relates to a concave vacuum cup with graduation, which is composed of a valve handle, a sealing device, a valve base and a vacuum cup body. The valve handle is provided with a valve handle head, a connecting link, an upper valve body, a middle valve body, a lower valve body and a circular cylinder sealing head; the sealing device is that a flexible sealing ring is clamped and fixed on the connecting link of the valve handle; the valve base made up of elastic material is provided with a spreading part, a base body, a spreading hole and an air hole; the vacuum cupping glass body is a semi-column body, and the top is equipped with an upper valve base body and a lower valve base body; the center of the valve base body is provided with an upper valve hole, a notch and a lower valve hole, and the lower valve base body is provided with a containing hole which is used to contain the valve base and a base hole which is provided with the base body of the valve base; the bottom of the arc-shaped cylinder wall forms an opening part, and the edge forms a ring body. The utility model has the efficacies of reliable and convenient operation and high intensity, and the utility model is unbreakable.