Waking up in the morning to urinate foamy may be urine concentration, dietary factors, acute urinary tract infection, kidney disease and other factors. 1. Concentration of urine: at night due to less urination, more urine in the bladder, may cause the concentration of urine, in the morning when you get up to urinate, there will be a lot of foam in the urine. 2. Dietary factors: in the night before going to bed to eat a lot of protein-containing foods, a small amount of protein into the urine, in the morning urination will appear foam increase, adjust the diet, and drink more water, usually can be recovered on their own. 3. Acute urinary tract infection: poor hygiene or unclean sex may induce acute urinary tract infection, such as cystitis, can make the presence of a variety of substances in the urine, which can lead to foam in the urine in the morning, accompanied by frequent urination, urination pain and other symptoms. 4. Kidney disease: for example, glomerulonephritis, can lead to serious impairment of the function of the kidneys, may be manifested as foamy urine in the morning, foamy urine may also occur at other times of the day, at the same time, the urine foam increases, may also be accompanied by swelling of the lower limbs, eyelid swelling and other symptoms. If the phenomenon of getting up in the morning to urinate foamy phenomenon, it is recommended to consult a regular hospital in a timely manner, for examination and treatment, to avoid delaying the condition.