Brown discharge at the age of 11 may be the onset of menstruation, or it may be related to the presence of luteal insufficiency in the organism or vaginal inflammation and other reasons, and it is recommended to consult a doctor in time. The age of first menstruation is between 13 and 14 years old, but it may be as early as 11 years old or as late as 16 years old, so the brown discharge of an 11-year-old girl may be a sign that the first menstruation is approaching. Usually, in the normal physiological development of women, if there is insufficient secretion of the corpus luteum or luteal dysfunction, it may have an impact on the body’s hormone secretion, and then abnormal secretions appear, such as secretions in brown color. In addition, if the body has vaginal inflammation, it may also cause the body to appear this kind of situation, mainly due to the inflammatory factor to cause greater stimulation, so that the body to produce an abnormal reaction. There may be other reasons for the brown discharge at the age of 11. It is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.