The treatment of tubulointerstitial nephritis mainly includes basic treatment, treatment for the cause of the disease and treatment of complications. The basic treatment is to preserve kidney, improve circulation and reduce kidney fibrosis, etc. The relevant drugs include Jin Shui Bao, Bai Ling capsule, Kidney Health, Nephrologic tablets, etc. For the treatment of etiology, firstly, kidney puncture biopsy is performed to clarify the type of kidney pathology, and immunosuppressive therapy such as hormone, cyclosporine, cyclophosphamide and tacrolimus is applied according to the pathological results. The treatment of complications is mainly to actively control blood pressure, protect heart function and prevent thrombosis.