Answer: No. Lime powder is a white powdery substance with calcium carbonate as the main ingredient. It is mainly used in the production industry in daily life. Although there is edible grade lime powder now, it is not directly edible. The national standard GB 1898-2007 for food additives calcium carbonate states that food additives calcium carbonate can be used as flour treatment agents, bulking agents, stabilizers and processing aids for the food industry. Calcium-containing foods such as: high-calcium cookies, high-calcium noodles, calcium candies, etc., as well as nutritional fortification of wheat flour are also added calcium carbonate as calcium supplements. The other lime powder is mainly composed of calcium oxide, after encountering water, a chemical reaction will occur, in the process of generating calcium hydroxide will release a lot of heat, which can damage the oral cavity, esophagus and gastrointestinal mucosa, resulting in ulcers, bleeding or perforation, etc., and the emergence of vomiting, abdominal pain, blood in the stool and other gastrointestinal tract conditions, and in serious cases, even life-threatening. In addition, lime powder dust or suspended droplets have an irritating effect on the mucous membranes and need to be prevented from inhalation when in contact. If you need to supplement calcium should seek medical advice, do not listen to the prescription of private consumption.