Urine routine is normal, morning urine foam, other time no, may be normal, only because parents judgment has subjective differences and worry; may also be urine concentration caused by, for example, drink less water, hot weather sweating and so on. 1. Subjective differences in judgment: normal morning urine itself has foam, because after a night of concentration, the morning urine in the material components of high concentration. There may also be no disease, but due to differences in the subjective judgment of parents, highly heavy, and therefore seek medical attention. 2. Drinking less water: drinking less water will lead to the concentration of urine, the concentration of substances in the urine increases, resulting in higher surface tension of the urine, which is manifested in the urine foam, drink more plain water, dilute the urine will return to normal. 3. Sweating: The hot weather outside leads to more sweating, the body water loss through sweat, the amount of urine generated is relatively small. In addition, the kidneys produce less urine at night, which leads to the concentration of urine, so that the morning urine foam is more. Overall, if the urine routine examination is not a problem, most of the morning urine foam is not a big problem, but it is recommended to review the urine routine and urinary system ultrasound, if the results of the repeated examinations are normal, generally do not worry too much.