Red bean and barley soup is not suitable for drinking at night, which will affect sleep. Because coix seed is called "coix seed" in traditional Chinese medicine, it is listed as the top grade in Shennong Herbal Classic. It can eliminate dampness and benefit the stomach, eliminate edema, strengthen the spleen and benefit the stomach, and can strengthen the body and replenish qi if taken for a long time. Red beans, known as "adzuki beans" in Chinese medicine, also have obvious diuretic and detumescence effects and spleen and stomach strengthening effects.

It can be seen that both red beans and barley have diuretic and detumescence effects. Drinking it at night will increase the frequency of going to the toilet and affect sleep. Therefore, it is recommended to drink highland barley and red bean soup around 10 in the morning. If time is tight in the morning, it's good to drink at noon.