Renal tuberculosis is usually secondary to other tuberculosis lesions, such as pulmonary tuberculosis, and is easily caused when the tubercle bacillus invades the kidneys. In the early stage of the disease, there is usually no clinical symptom, and it is only detected by chance during examination. After the disease gradually aggravates, it may cause lower urinary tract symptoms, such as urinary frequency and urgency, etc. With the aggravation of the lesion, hematuria and pyuria may appear. With further aggravation of the lesion, it may cause obvious urinary abnormalities, for example, when bladder contracture occurs, the frequency of urination is severe, and the amount of urine is very small each time, and if the disease is not treated for a long period of time, it may also cause some complications, for example, hydronephrosis, renal failure, and so on. After the appearance of symptoms of renal tuberculosis, patients should seek medical examination and treatment as soon as possible to avoid delaying the condition.