If the patient belongs to the blood stasis evidence after drinking a moderate amount of saffron menstrual flow may be normal, if excessive consumption may cause abnormal menstrual flow. Saffron is the dried stigma of the iris plant saffron, clinically it has the effect of activating blood stasis, cooling the blood and detoxifying the toxin and dispersing depression and opening the knot. It is mainly used for the treatment of menstrual disorders, dysmenorrhea, bruises and injuries, and post-partum discharges. However, if patients take too much saffron, it may lead to the phenomenon of increased menstrual flow. Do not drink saffron during menstruation, it may lead to increased menstrual flow and may also cause prolonged menstruation. Saffron has the effect of activating blood circulation and is not recommended for pregnant women. If the patient has abnormal menstrual flow after drinking saffron, it is recommended to go to the hospital in time. Saffron should be taken under the diagnosis and treatment of a Chinese medicine practitioner to avoid medication risks.