For the contraindications of blue butterfly flower tea, mainly daily oral intake will lead to insomnia, especially before bedtime oral intake, will lead to irritability, it is difficult to fall asleep, seriously affecting the quality of sleep. The tea can not drink on an empty stomach, drinking on an empty stomach will stimulate the gastrointestinal tract, inducing intestinal discomfort symptoms, nausea, vomiting, diarrhea and other gastrointestinal symptoms. The tea is best to drink according to seasonal changes, do not drink every day, especially for women, if the body is weak, a long time to drink regardless of the season, will lead to menstrual disorders and other endocrine disorders. Blue butterfly flower tea has great benefits in daily application, it can assist in the treatment of toothache, can be cosmetic, can calm the mind and relieve fatigue, etc., but it is best to apply it reasonably under the guidance of professionals.