Tongue greenish purple from the perspective of traditional Chinese medicine analysis is mostly due to the qi and blood is not smooth. Due to the poor operation of qi and blood, blood stasis is blocked, so the tongue can be seen blue and purple. 1. Purple tongue suggests blood stasis in the whole body. 2. Purple spots on the tongue suggest that blood stasis is blocked locally or that the local blood channels are damaged. 3. Reddish-purple tongue color suggests congestion of lung qi, blood stasis due to liver depression, blood stasis due to qi deficiency, congenital heart disease, drug and food poisoning. 4. Mauve tongue color suggests Yin cold blood stasis, Yang deficiency blood stasis. 5. The tongue color is purple-red, reddish purple, suggesting that heat and poison injure the blood and qi and blood congestion. However, tongue is only a part of the four diagnosis of Chinese medicine, and can not be based on the tongue alone to judge, but also need to be based on the patient’s pulse diagnosis, questioning, smell diagnosis of the situation for a comprehensive analysis. It is recommended that the patient should consult a professional doctor if he/she is not feeling well.