The contraindications of red bean water are as follows: First, the body of Yin deficiency thin people are not suitable to drink red bean water, in order to avoid its diuretic effect and cause dry mouth, dry tongue and even dehydration. Second, allergy-prone body do not drink red bean water, some patients will be allergic to plant proteins, try to apply under the guidance of a doctor reasonable. Third, for obvious kidney disease caused by edema do not drink red bean water, because the kidney is the main organ of urination, and lesions will lead to urine can not be discharged, the application of red bean water will lead to a heavier body burden, especially prone to increase blood pressure and so on. Clinically, red bean water is basically used as an auxiliary treatment, including nourishing the heart, tonifying the blood, strengthening the spleen and stomach, etc. It is best to apply it under the guidance of professionals.