Bad breath nails have vertical lines may be bad liver, may also be diet stagnation and so on. Chinese medicine believes that the liver its Hua in the claw, the so-called claw, is the nail. Nails need to rely on liver blood to nourish, under normal circumstances liver blood is sufficient, nails will be smooth, moist. The nails have vertical lines, dry, easy to crack, is the lack of liver blood, liver fire is too strong, can not nourish the performance of the nails. Bad breath, according to TCM, is also related to excessive liver fire. Bad breath and nails with vertical lines caused by bad liver are also accompanied by symptoms such as emotional irritability, easy to anger, insomnia, dreamy and bitter mouth. In addition, bad breath and nails with vertical lines may also be a sign of a weak spleen and stomach, indigestion of food, and accumulation of food in the stomach. This kind of bad breath manifests itself as a sour and putrid odor, like the smell of food rotting, accompanied by symptoms such as loss of appetite, abdominal distension, stomach bloating, and constipation. If there is persistent bad breath and vertical lines on the nails, it is recommended to seek medical attention, follow the doctor’s instructions for examination and treatment, and not to use medication without authorization.