The glass tube Laser separator can be used for the parameters of glass tube diameter, wall thickness, wall-deflection, and so on to carry out high precision detection and multi-gear sorting. Under the same firing conditions, the uniform glass tube will obviously improve the appearance and product yield of the product. The equipment can be applied to various kinds of medicinal, electric light source, special glass products and other manufacturers to various lengths, external diameter of the glass tube for high-precision multi-block selection.