Tongue numbness is mainly considered as a symptom of poor qi and blood circulation, blood deficiency and lack of glory, which is mainly related to the dysfunction of the heart and the spleen. According to TCM, numbness of the tongue is mostly considered to be a dysfunction of the heart and the spleen. The heart opens the orifices of the tongue, so if the heart meridian is not well-functioning, it may affect the normal function of the tongue; the spleen opens the orifices of the mouth, and the spleen meridian of the foot taiyin is connected to the root of the tongue, which is dispersed underneath the tongue, so if the spleen meridian is not well-functioning, it may also affect the normal function of the tongue. If the spleen meridian is deficient in qi and blood, it may also affect the normal function of the tongue. When the patient has blood deficiency and lacks honor, the tongue may become numb because it cannot be nourished by qi and blood. Therefore, if the patient has heart or spleen/stomach dysfunction that leads to poor qi and blood circulation and blood deficiency, it may affect the tongue and affect its normal function. If there is any discomfort, patients are advised to go to a professional hospital for examination and diagnosis to clarify their condition and receive proper treatment under the guidance of a doctor.