The common reasons for feeling sore kidneys are: 1. if you spend a long time in a sitting position or stand for a long time, you will experience lumbar soreness. 2. severe sleep deprivation and long-term strain will also lead to sore kidneys. 3. in the early stages of kidney disease, such as glomerulonephritis, you will experience lumbar soreness, and it is recommended that you go to the hospital to improve urinary routine, kidney function and other related tests to further clarify the diagnosis. 4, 4, the kidney occupying lesions, kidney cysts, kidney tumors due to the increase in volume after the compression symptoms, may appear a little kidney sore feeling. Finally, lumbar muscle strain and cerebral neuropathy may also cause soreness in the kidneys.