Normally, rubbing the dal does not cause menstrual irregularities in women. DouDou is the clitoris, rubbing the clitoris is a kind of masturbation behavior, usually this kind of behavior will not cause irregular menstruation, nor will it cause disease. Irregular menstruation is usually due to changes in the thickness of the endometrium abnormal, and masturbation does not have a direct relationship, if the case of irregular menstruation or need to go to the regular hospital examination, according to the results of the examination to regulate. However, rubbing the clitoris masturbation should also pay attention to hygiene, so as not to cause infection caused by inflammation, at the same time to control the number of times, otherwise it is easy to produce lazy, become overly sensitive.