Red tongue without moss should mean red tongue without moss. Red tongue without moss usually indicates a high level of Yin deficiency, but liver fire or kidney fire may occur. However, the specific cause should be decided in conjunction with the patient’s other symptoms. 1. Liver fire: Chinese medicine believes that a red tongue without moss mostly indicates a high degree of yin deficiency. If the liver fire is exuberant, it burns the yin and fluids, which can lead to yin fluid loss, so a strong liver fire may also lead to a red tongue without moss. However, a red tongue without moss does not simply mean that the liver is on fire, it should indicate a deficiency of liver yin caused by liver fire. 2. Kidney fire: the pathological state of kidney fire generally refers to kidney yin deficiency and fire (deficiency of yin and essence in the body, resulting in hyperactive fire), which can be manifested as red tongue without moss, soreness and weakness of waist and knees (feeling of soreness and weakness of the waist and knees), hot flashes (a burst of heat), night sweating (abnormal sweating after going to sleep, and sweating stops after waking up), and heartburn and heat (heat in the hearts of the hands and the feet and self-consciousness of the heart and chest), etc. If the tongue is red without moss for a long period of time, then it is not necessary for you to have any symptoms, so you should not worry about your own heart. If the symptoms of red tongue without moss are not relieved for a long time or accompanied by other discomforts, consult a doctor in time to identify the cause and carry out targeted treatment.