Women with short periods can take Zuo Gui Wan in moderation, Zuo Gui Wan has the effect of nourishing kidney yin, and can be taken in moderation if women with low menstrual flow and short periods are caused by kidney yin deficiency. Generally, it is necessary to avoid taking medicines that activate blood circulation and remove blood stasis (promoting blood circulation and eliminating blood stasis in the body) during menstruation. Zuo Gui Wan is composed of Chinese yam, Cornu Cervi Pantotrichum, Radix Rehmanniae Praeparata and Semen Cuscutae, etc. It can be used for treating lumbar and knee soreness and limpness (a feeling of weakness and tenderness of waist and knees), dizziness and night sweating (abnormal sweating after falling asleep, and stopping of sweating after waking up) due to deficiency of kidney and yin. It can be taken in moderation for women with low menstrual flow and short menstrual period due to deficiency of kidney yin. It is recommended that menstruating women pay attention to keep warm, eat a light diet, eat less spicy and stimulating food, menstruation can be moderate to eat some blood replenishing food, such as jujube, wolfberry, cinnamon and so on. Drugs need to be taken under the guidance of a professional physician, do not take medication without authorization, in order to avoid adverse consequences.