Aluminum phosphate gel is usually used 2~3 times a day, in 1~2 bags at a time. Before use, it can be fully shaken, or it can be mixed with boiling water, and different use time can be selected according to different indications. Patients with gastritis and gastric ulcer should take it half an hour before meals, and patients with duodenal ulcer should take it after meals or before going to bed at night. The drug can alleviate the acid regurgitation symptoms caused by excessive gastric acid, and is suitable for acid related diseases such as gastric ulcer, duodenal ulcer and reflux esophagitis. During the application of this drug, it may cause adverse reactions, constipation and diarrhea, but these are rare. If there is chronic renal failure, patients with hyperphosphatemia should not use it. Pregnant women and lactating women should try to avoid using it. If elderly patients use drugs, they should strictly follow the doctor's advice. In addition, the drug may interact with other drugs, so more attention should be paid in the application process.