A dull yellow face with no luster and sweating is usually caused by deficiency of qi and blood, weakness of the spleen and stomach, and kidney yin deficiency. 1. Qi and blood deficiency: Qi and blood deficiency in Chinese medicine. Qi deficiency can lead to coldness, cold limbs, and spontaneous sweating (involuntary sweating during the day, aggravated by the slightest movement of sweating) and other symptoms; blood deficiency can lead to dry skin, yellowish color, and insomnia and dreams. 2. Weakness of the spleen and stomach: this can lead to dysfunction in the transportation of water and dampness, resulting in excessive sweating and yellowish skin. 3. Kidney yin deficiency: the symptoms of kidney yin deficiency are heat, after the kidney deficiency, the waist and knees will be weak (waist and knee soreness and weakness), fatigue (lack of energy), fatigue (mental exhaustion, physical weakness), dizziness, yellowish color, no luster and other symptoms . There are many reasons for the dark yellow color and lack of luster sweating, patients should go to the hospital in time to do the relevant examination, to avoid delaying the condition of the adverse consequences.