Lactose intolerance can be detected by urine galactose test and lactose tolerance test. Patients with protein allergy may have symptoms such as red and swollen skin, diarrhea, and sore throat. 1. Lactose intolerance: The presence of lactose intolerance can be detected by urine galactose test and lactose tolerance test. (1) Urine galactose test: The body will metabolize lactose through urine after ingestion. Urine galactose test can detect the level of lactose in urine, and then clarify the digestion of lactose. (2) Lactose tolerance test: patients should first test the fasting blood glucose level, and then follow the doctor’s instructions to take lactose orally, and then test the blood glucose value after taking 0h, 1h, 2h, if the blood glucose value is high, it generally suggests that lactose intolerance. 2. Protein allergy: some patients in the consumption of eggs, milk and other high-protein foods, the body’s immune system will produce an abnormal immune response, typical symptoms include skin redness and swelling, headache, diarrhea, indigestion, sore throat and asthma, etc., and in severe cases, arthritis, depression and other diseases may be triggered. If a patient develops lactose intolerance or protein allergy, it is recommended to visit a hospital in time for targeted treatment under the guidance of a doctor in order to minimize the adverse effects of the disease.