The cold itself can affect the endocrine disorder, and the delay of menstruation occurs. Also, oral cold medication, mood, diet, insomnia, irregularities in work and rest, etc., all of these factors can cause a delay in menstruation, and colds have them. Generally, the effect of a light cold on menstruation is relatively small, but a heavy cold, especially when it involves medication, can have a great impact on menstruation and may delay it for a few days, usually for about 7 days. In addition to colds, other inflammatory diseases, such as severe pneumonia, severe gastritis, all kinds of inflammatory diseases can cause maladjustment in the body, mobilize the body’s immunity and also interfere with the body’s normal work and rest, as well as biological regularity is broken, and the delay of menstruation occurs.