The presence of crescenticity is mostly suggestive of acute glomerulonephritis. Acute progressive glomerulonephritis is a group of diseases with pathological type manifested as crescent, including anti-glomerular basement membrane type, immune complex type and oligoimmune deposition type, and immune complex type is slightly more common in our country. Most of the patients have rapid onset of disease, rapid progression, clinical manifestations of edema, hypertension, hematuria, proteinuria, short-term sharp deterioration of renal function, the patient may be accompanied by varying degrees of anemia, the patient should be clear as soon as possible the cause of the disease and immunopathological typing, as soon as possible to start intensive immunotherapy, according to the condition of the use of methylprednisolone shock therapy, plasmapheresis, and so on. Crescent should go to the hospital in time, under the guidance of professional doctors to clarify the diagnosis, according to the different causes of the disease to take the correct treatment, can clearly improve the patient’s prognosis.