Whether or not 700 erythrocytes/ul in urine test is serious depends mainly on the reason for the presence of erythrocytes in urine. If the hematuria is caused by physiological reasons such as strenuous exercise, it is usually not serious; if it is caused by pathological reasons such as glomerulonephritis, urinary stones, urinary tumors, etc., the condition is mild and the treatment effect is good, it is not serious at this time, and the condition is more serious and the treatment effect is not good, it will be more serious. 1. Physiological reasons: if normal people who usually exercise less, exercise hematuria may occur after suddenly increasing the amount of exercise, but this is only transient, does not require special treatment, usually not serious. 2. Pathologic causes: (1) Glomerulonephritis: manifested by hematuria, proteinuria, hypertension and edema. If the pathological type is light, the treatment effect is good and the condition is relieved, hematuria is not serious at this time; if the pathological type is heavy and the treatment effect is poor, it is more serious at this time. (2) Urinary stones: When kidney stones or ureteral stones are present, the stones rub against the mucous membrane causing bleeding of the mucous membrane and hematuria. It can be treated by means of lithotripsy drugs or surgery. If the treatment effect is good, it is not serious at this time; if the treatment effect is poor and continues to damage the kidney, it is more serious at this time. (3) Urological tumors: renal tumors can also cause painless hematuria when invading renal calyx and renal pelvis. It is more serious at this time. There may be other reasons for red blood cells in urine, so we suggest patients to go to regular hospitals in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.