Lips purple and black may be physiological causes of melanin deposition, this time does not need treatment, but may also be caused by lack of oxygen, this time can be improved through appropriate exercise, regular rest and relaxation, medication (such as deacetyl trichothecenes) and other ways to improve. 1. Physiological reasons This is due to localized hyperpigmentation, which will not affect normal life and generally does not require special intervention. 2. Pathologic causes (1) Lung disease: the ability of blood to transport oxygen can be improved through long-term appropriate exercise, thus improving the situation of purple and black lips. If the condition is more serious, active oxygen inhalation is needed, and according to the specific cause, phlegm, anti-infection and other treatments should be carried out. (2) Heart failure: If there is heart failure, it is necessary to use drugs such as deacetyl furfuryl glycoside to treat heart failure, and at the same time, oxygen inhalation. The first thing to do is to find out whether there are any pathologic factors in the appearance of purple and black lips. If the patient found his lips purple black, need to consult a doctor in time, check the relevant causes, under the guidance of the doctor for the cause of the treatment. Drugs should be used in accordance with medical advice.