Compared with dry grinding, wet grinding has the following advantages: 1. It can keep the malt husk intact and form a loose and efficient filter layer. The thickness of the filter layer can be increased by 15-20%. 2. It can speed up the filtration speed of the wort, and the wort is clear, and the total wort filtration time can be shortened by 15-20%. 3. It can grind the wheat tooth endosperm into fine pulpy grains, and increase the wort yield by about 2%. The effect is especially obvious for malt with poor solubility. 4. The wheat husk remains intact, which can reduce the dissolution of polyphenols in the wheat husk, reduce the bitterness and astringency in the finished beer, and reduce the color.