Disadvantages: Due to the supersaturation of calcium and magnesium in mineral water during freezing, white precipitate will be produced with the decomposition of bicarbonate, especially for mineral water with high calcium and magnesium content and salinity greater than 400mg/L, white flake or granular precipitate will appear after freezing. The analysis data of the laboratory also proves this point. Compared with the analysis of raw water, many kinds of mineral water are frozen. Because of the white precipitation, bicarbonate and calcium ions in the frozen water are obviously reduced, while other components in the frozen water, especially the trace elements beneficial to human body such as metasilicic acid and strontium, have no obvious changes. Therefore, drinking frozen mineral water is harmless to the human body, and drinking frozen water is harmless to those who are greedy for cold. But after all, bottled water has sediment, which affects sensory indicators.