Urine protein 2+, which is characterized as (++) in the urine chemistry test, is positive. Normally, healthy adults excrete 30-130mg of protein through urine per day, which is usually characterized as negative, and if the protein concentration is >100mg/L, or >150mg/24h, it is characterized as positive, i.e. proteinuria. Qualitative urine protein (++) can usually exclude the possibility of physiological proteinuria, and is mostly pathological urine protein with some persistence. It is usually associated with patients suffering from kidney disease as well as other diseases, such as acute nephritis, diabetic nephropathy, renal ischemia, interstitial nephritis, and systemic lupus erythematosus. Some patients with diseases such as hemolytic anemia, light chain disease, plasma cell disease, multiple myeloma, or drug damage by heavy metal poisoning can also cause an increase in urine protein concentration and a urine protein qualitative (++). If a patient has a urine protein level of (++), he or she should pay close attention to it and go to the hospital in time to improve the kidney function test, plasma protein test and other related tests. In addition, if conditions permit, a kidney puncture biopsy should be performed to clarify the specific degree of kidney damage and the specific cause, and cooperate with professional doctors to actively carry out treatment. In daily life, you should choose to eat high-quality protein, such as soybeans and eggs, and avoid spicy and stimulating foods.