The efficacy and function of saffron is generally not to tonify the kidneys, and its effects are mainly to activate blood circulation and remove blood stasis (to promote blood circulation and eliminate blood stasis in the body), and to cool the blood and detoxify the toxin (referring to the treatment of blood-heat and toxin impregnation). The Chinese medicine saffron refers to the upper part and stigma of the style of the iris plant saffron, which is sweet in taste and flat in nature, and its effect is to activate blood circulation and eliminate blood stasis, dissipate depression and open up the knot, which can be used for treating menstrual cramps, amenorrhea, post-partum abdominal pain of stagnant blood, vomiting of blood, melancholy, chest and diaphragm constriction, fever, palpitations and other illnesses. Its efficacy and action cannot tonify the kidney. The adverse effects of saffron have not been clarified. Because of the strong blood activating effect, pregnant women need to be cautious in taking this drug. For patients who need to tonify the kidney, it is recommended to go to a regular hospital and use the medicine under the guidance of a professional Chinese medicine practitioner. In daily life, patients need to ensure sufficient rest time, do not overwork, maintain a positive and optimistic attitude, avoid negative emotions.