1, Traumatic pulp exposure of anterior teeth, perfect root canal treatment. 2.Placement of root canal fiber pile, tooth preparation. 3.The restoration was completed. The difficulty of this case is that the restoration patient is a tetracycline patient with light staining of the whole teeth, which is difficult to compare the color. Through zonal colorimetry and comparison with digital photos, the technician used special staining and lip surface to simulate the natural enamel pattern to achieve a natural harmony of shape and color after restoration.