Excessive thinking generally injures the spleen and can also involve the liver. According to Chinese medicine, thoughts are generated by the spleen essence and spleen qi, so there is spleen in the will as thoughts. Generally, moderate thinking will not affect the function of the body; however, if thinking is excessive, it will easily impede the transportation function of the spleen qi, resulting in the depression of the spleen qi, the spleen qi can’t rise, the stomach qi can’t fall, and the spleen and stomach will be damaged. Spleen and Stomach qi dysfunction (the body’s gas does not run smoothly) is manifested by a lack of desire to eat and drink, abdominal distension and chest tightness, dizziness, etc. If there is a weakness of the spleen and stomach, there may be weakness of the limbs and fatigue, a decrease in food and drink, diarrhea, hidden pain in the abdomen, etc. If it develops into a deficiency of Spleen-Yang, it may appear as a lack of warmth of the limbs, a cold pain in the abdomen, and an intolerance to cold food and drink. In addition, if there is overthinking and at the same time there is a lack of emotional well-being, it will also involve the liver in Chinese medicine, resulting in pain in the thighs and ribs, sullenness, and a tendency to sigh. Therefore, if there is excessive thinking and the above symptoms occur at the same time, it is recommended to be treated under the guidance of a doctor. Meanwhile, paying attention to regulating the emotional state can reduce the occurrence of the disease.