If the yellow spots on the teeth are soft tartar or calculus, they can be removed by brushing or scaling; if they are fluorosis or tetracycline, they can be whitened or restored with crowns. 1. Soft scale or calculus: If the yellow spots are soft scale, you need to brush your teeth carefully every day, once in the morning and once in the evening, for 2-3 minutes a time, so as to keep your teeth clean as well as oral hygiene, and play a role in eliminating the yellow spots on your teeth. If it is calculus, it is recommended to go to the hospital to do cleaning treatment, timely removal of calculus on the teeth to prevent gingivitis or periodontitis. 2. Fluorosis or tetracycline: Fluorosis or tetracycline can be whitened or bleached, or crown restoration. However, it should be noted that these methods will cause some damage to the teeth, and need to be carefully considered by the patient. For any of the above treatments, it is recommended to go to the dentistry department of a regular hospital.