Probiotics are living bacteria, which need to be kept active at a suitable temperature. Generally speaking, the suitable growth temperature of probiotics is around 37 degrees. Therefore, if probiotics are put into 37 degrees water, they will gradually lose their activity, leading to the weakening of the effectiveness of probiotics. In addition, too high water temperature will kill probiotics and make them useless. Therefore, when selecting probiotic products, we should pay attention to selecting products with sufficient viable bacteria and high activity, and pay attention to controlling the water temperature when eating to avoid killing probiotics when the water temperature is too high.