Symptoms of qi stagnation and blood stasis during menstruation (stagnation of blood due to lack of circulation of qi) include bloating and pain, purplish color of menstruation and prolonged menstruation. 1. Chest tightness, distension and pain: it is basically caused by stagnation of qi, treatment should be based on dredging the liver and regulating qi (regulating the stagnation of qi in the liver), activating blood circulation and relieving pain (relieving pain by removing stagnation of blood), and can be taken by taking decoction of mugwort leaves, etc., and at the same time, one should keep a happy mood. 2. Purple and black color of menstruation: it has a lot to do with the deficiency of qi and blood, you can drink more brown sugar water during menstruation and pay attention to keep warm. 3. Prolonged menstruation: it has a lot to do with mood depression and irritability or feeling cold after giving birth, you need to keep an optimistic mood, and you can relieve the symptoms through massage and dietary therapy. If there are symptoms of Qi stagnation and blood stasis during menstruation, it is recommended to go to the hospital in time for early and formal treatment.