When the milk teeth have not fallen out and the permanent teeth have grown out, it is called double row of teeth. At present, the domestic stomatologists for double rows of teeth more unified treatment recommendations are: according to the loosening of the milk teeth, there are waiting for the milk teeth to fall out by themselves and extraction of the two solutions. 1. If your child’s milk teeth are already loose, you can wait for them to fall out on their own, or you can eat something hard to promote their falling out. 2. If the baby teeth are still strong and may not fall out in a short time, you need to go to the hospital to take dental radiographs and consider the treatment plan according to the resorption of the roots of the baby teeth. The general treatment plan is to extract the milk teeth. Because the milk teeth do not fall out for a long time, it will lead to permanent teeth misalignment, and may also cause periodontitis and other oral problems.