There are more reasons for the black nose, and endocrine disorders, improper diet or improper cleaning and other factors, as follows: 1, endocrine disorders: the usual irregular life, often stay up late and sleep poorly, or mental tension and stress, resulting in metabolic disorders, endocrine disorders, increased blackheads caused by the black nose. Suggest that patients should relax, timely adjustment of psychological pressure, maintain a good state of mind, pay attention to proper rest; 2, improper diet: often eat spicy and stimulating food and high-fat, high-sugar food, stimulating the secretion of sebaceous glands, blocking the pores and the formation of acne resulting in nose black, it is recommended that the appropriate amount of vitamin supplementation, eat more vegetables, fruits, avoid spicy, greasy, stimulating food; 3, cleaning is not in place: facial cleaning is not complete The usual residual dirt in the pores is not thoroughly removed, blocking the pores to form a black nose acne; 4, other factors: such as external stimulation, squeezing leading to local infection, or the patient’s poor spleen and stomach, qi and blood deficiency is also prone to nasal blackness. In addition, if there is liver disease and a long medical history, it is easy to have pigmentation in the nose area, which needs to be treated after clarifying the cause.