The standards of tooth alignment are as follows: 1, the upper and lower teeth should have a cusp and fossa occlusal relationship, and the bite should be relatively tight; 2, the middle gap of the upper and lower teeth should be basically aligned; 3, the upper and lower teeth should basically reach a state of no crowding, no gap, and no twist so that they are relatively closely aligned; 4, the upper front teeth should cover 1/3 of the lower front teeth, and the covering relationship should be 2-3mm; 5, the upper and lower teeth should have a certain inclination, for example, the upper front teeth should be mildly tilted forward a little, the upper back teeth should be mildly tilted outward a little, the lower front teeth should be relatively upright a little, and the lower back teeth should be relatively lingually tilted a little; 6, the front and back of the upper and lower teeth should have a certain curve, it is not a plane. If the above criteria are basically met, it is a relatively perfect orthodontic result.