Sour taste enters the liver and has astringent effect. Spring is the season for the growth of liver qi. Overeating sour food will affect the growth of liver qi, leading to liver failure and stagnation of spleen and stomach. This is the reason why chronic gastritis, gastric ulcer and other diseases occur frequently in spring. From a health point of view, we should eat less sour food in spring. And sweets can strengthen the spleen and replenish qi, which is helpful to the growth of yang, so you can eat more appropriately.