The causes of proteinuria 2+ include physiologic proteinuria, urinary tract infections, and renal lesions, etc. The symptoms are different depending on the cause of the disease. 1. Physiological causes: excessive exercise, women’s special period and alcohol abuse, overwork, etc. will appear proteinuria 2 +, may appear in the urine foam increase, fatigue symptoms, usually not accompanied by other abnormal performance. 2. Urinary tract infection: patients with proteinuria 2+, often with urinary frequency, hematuria, urinary pain, pus in the urine or urinary difficulties, fever and other symptoms, should be actively anti-infection treatment. 3. Renal lesions: such as nephrotic syndrome, glomerulonephritis and other causes of proteinuria 2 +, the patient will have malnutrition, face or ankle edema, foamy urine, fever, back pain, cloudy urine and other symptoms, to actively carry out the treatment of the original disease. Urine protein 2 + patients are recommended to go to the hospital in time to identify the cause, under the guidance of the doctor for treatment.