The dark purple color on both sides of the tongue is commonly caused by qi stagnation and blood stasis, which can be regulated by medication and acupuncture. However, the specific cause and treatment should be decided by the doctor according to the patient’s specific condition. Clinical manifestations of qi stagnation and blood stasis include localized distension, stuffiness, plumpness and pain in the liver meridian area, which is sometimes light and sometimes heavy, and can be alleviated by belching (hiccups) or farting (farting), and is related to mental factors; plumpness under the dorsum (lumps), with a fixed and immovable pain site, pain that refuses to be pressed and is aggravated by nighttime, and bruises on the face, mouth and lips, and so on. 1. Medication: Commonly used Chinese medicines include Chai Hu, Xiang Fu, Citrus aurantium, Qing Pi, Red Peony, Rhizoma Ligustici Chuanxiong, Peach Kernel, Safflower, Licorice, etc. Commonly used proprietary Chinese medicines include Easy Pill, Yue Ju Pill, and Blood Preventing and Evacuating Blood Stasis Pill. 2. Acupuncture and moxibustion treatment: the acupoints can be selected such as Futanmen, Riyue, Zhigou, Yanglingquan, Ashigaru, Taichong, Zhangmen, Xingma, etc. The acupoints can be used to treat the symptoms of dark purple on both sides of the tongue. If the symptoms of dark purple on both sides of the tongue are not relieved for a long time or accompanied by other discomforts, consult a doctor in time to find out the cause and carry out targeted treatment. Note that the taking of the above medicines needs to be guided by a doctor, and acupuncture needs to be operated by a professional doctor.