Saffron should be used with caution in pregnant women, people with excessive menstruation, and people with bleeding disorders. Saffron is the dried stigma of saffron, family Iridaceae. It is sweet in flavor and flat in nature; it belongs to heart and liver meridians. It has the efficacy of promoting blood circulation, dispersing stagnation and opening up the knot, cooling the blood and detoxifying the toxin. It is used for treating dysmenorrhea, menstrual closure, menstrual disorders, post-partum menstrual discharge, abdominal pain, bruises, depression, palpitations, warm spots, and measles. Saffron is strong in activating blood circulation, and it can pass menstruation, so pregnant women, people with excessive menstruation, and people with bleeding disorders should be cautious of using it. If there is a need for medication, it should be used under the guidance of a doctor, and should not be used blindly on its own, so as not to cause adverse consequences or delay the condition.