Ten days late menstruation is not normal and is a sign of menstrual disorders. Menstruation refers to the cyclical shedding of the uterine lining along with the cyclical changes in the ovaries, as well as bleeding. Normal menstruation is cyclical, generally women’s menstrual cycle is 21-35 days, an average of 28 days, each time the duration of 2-8 days, menstruation about a week or so in advance or after the normal phenomenon, so menstruation delayed for ten days is not normal. If menstruation is delayed for ten days before the onset of menstruation, you should consider whether you are pregnant or not, you can test through the early pregnancy test paper, or go to the hospital to draw blood to check the chorionic gonadotropin to determine whether you are pregnant or not. If the menstruation is delayed for ten days, then consider that the patient has irregular menstruation, which may be caused by the patient getting cold or eating cold food, staying up late recently, not getting enough sleep, and having too much mental stress from work, life, and so on.