Urine protein 3+ is a laboratory test result that indicates a large amount of protein in the urine, which can be seen in physiological or pathological factors. Physiological factors caused by generally no special symptoms, caused by pathological factors, can be accompanied by foamy urine, edema, thrombosis and embolism and other symptoms. The cause of urinary protein 3 + can be seen in physiological factors such as consuming too much high-protein food or after strenuous exercise, generally eliminate the triggering factors can be gradually relieved, no special symptoms; if the pathological factors, such as nephrotic syndrome, a variety of acute and chronic glomerulonephritis disease, can be accompanied by foamy urine, edema, thrombosis and embolism and other symptoms. 1. Foamy urine: excessive protein in the urine, the urine can appear in the naked eye visible small, long time difficult to disappear the foam, with proteinuria aggravation, prolonged time. 2. Edema: a large amount of albumin is lost from the urine causing a decrease in plasma colloid osmotic pressure, water from the vascular space into the tissue interstitial space leading to edema. 3. Thrombosis and embolism: protein loss, coupled with the water in the blood run to the tissue interstitial resulting in blood concentration caused by increased blood viscosity, easy to cause pulmonary embolism, lower extremity venous embolism, cerebral embolism and so on. It is recommended that patients with urinary protein 3+ go to the hospital in a timely manner to improve the relevant examinations under the guidance of the doctor, to clarify the causes, and active treatment.