Nails with horizontal lines, first of all, should solve the problem of malnutrition, supplementation, enhance energy to solve the deficiency of qi and blood, liver and blood deficiency, so as to improve the problem of nails with horizontal lines, at the same time to supplement vitamin A, you can eat carrots and other foods. Pay attention to the regular diet, do not eat cold, greasy food, if the diet is not careful, there will be abdominal pain, loose stools and nails with horizontal lines are also related. People with heart problems should pay attention to good precautionary measures, such as oral food such as salvia and saffron to solve the problem of heart stasis and thus reduce the symptoms of crossed nails. Allergies can also cause crossed nails, such as hives, and the nails can have crossed lines. In addition, the location of the horizontal lines, depending on the growth rate of the nail has a six-month change, if you find a horizontal line in the middle of the nail, it indicates that there was a major gastrointestinal disorder about 3 months ago. Therefore, it is important to pay attention to gastrointestinal disorders and avoid overworking and eating carelessly, which can lead to crossed nails, so it is important to do a good job of prevention.