Urine protein 3+ without any symptoms may be a normal physiological phenomenon, but most of the time suggests the possibility of kidney-related diseases. Urine protein 3 + that is, urine protein positive, causes urine protein is divided into physiological and pathological factors, physiological factors caused by the general is not serious, pathologically caused by the usually more serious. Physiological factors: for example, excessive fatigue, mental stress and excitement can trigger temporary proteinuria, and thin and tall adolescents can also appear in the upright position and lying down disappearance of postural proteinuria. This kind of patients do not have special clinical symptoms, this time do not need to worry too much, usually not serious, after a few days of rest can return to normal. Pathological factors: asymptomatic proteinuria may also be a manifestation of renal disease, such as cryptogenic nephritis, membranous nephropathy, diabetic nephropathy, etc., which need to be combined with other indicators to further analyze the reasons for the increase in urinary protein. If you find that the urine protein is abnormally high, you should go to the hospital in time to improve the renal function, renal ultrasound and other tests to determine whether it is a pathologic factor, and then treat it under the guidance of a professional physician.