The invention discloses a traditional Chinese medicinal preparation for treating the chronic pyelonephritis. The preparation is characterized in that the preparation is prepared from the following raw materials, by weight, 8-10 parts of Cortex Moutan, 8-10 parts of Herba Lycopi, 8-10 parts of licorice, 8-10 parts of white peony root from Hangzhou, 5-8 parts of Boswellia carteri, 5-8 parts of myrrh, 15-20 parts of Yerbadetajo Herb, 15-20 parts of Lysimachia christinae Hance, 15-20 parts of Herba Taraxaci, 15-20 parts of Herba Leonuri, 8-10 parts of cortex magnoliae officinalis, 8-10 parts of Radix Astragali, 8-10 parts of Chinese yam, 15-20 parts of donkey-hide gelatin, 15-20 parts of Weeping Forsythia, 15-20 parts of pollen, 5-8 parts of Herba Cirsii, 5-8 parts of Rheum officinale, 8-10 parts of Eucommia ulmoides and 8-10 parts of Radix Aucklandiae. The preparation treats the adjustment of the basic functions of the body as a starting point, and has the advantages of fast treatment speed, good treatment effect, reaching of simultaneous treatment of principal and subordinate symptoms, and no recurrence after curing.