The heavy metals mentioned in food safety are different from those in chemistry. According to GB 2762-2112, they should be pollutants in food. Aluminum is not a pollutant, so we will not talk about the heavy metal detection of aluminum alone. Because many additives contain aluminum, this item of aluminum is called aluminum residue (dry matter, calculated by Al) in the detection, so this item belongs to the scope of additives. In addition, due to the announcement of the National Health and Family Planning Commission and other five departments (No.8, 2114) on adjusting the regulations on the use of aluminum-containing food additives, after July 1, 2114, a variety of aluminum-containing additives that could have been used in GB 2761-2111 were banned or the scope of use was reduced, which had a great impact on catering, because all restaurants except a few varieties would not be able to use aluminum-containing additives such as aluminum-containing leavening agents, but in fact some restaurants did not know or actively ignored this announcement.