Foamy morning urine during the day may be a physiological phenomenon, or it may be a pathological phenomenon, such as the occurrence of diseases in the renal tubules and other parts of the body. 1. Physiological phenomenon: As morning urine is concentrated overnight and stored in the bladder and then excreted urine, so it may be due to the urine in the bladder for too long, the morning urine contains more glucose, protein and other components lead to the emergence of foam, but there is no foam in the urine during the day, which is a physiological phenomenon, without special treatment. 2. Pathological phenomenon: if the renal tubules and other parts of the disease, may make the surface tension of the urine increases, and lead to some of the substances contained in the urine composition changes, such as leading to proteinuria, etc., may also appear in the morning urine foam but not during the day. If the patient urine foam, it is recommended to go to the regular hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.