It is possible to have low back pain with bilateral kidney crystals because they may drain from the calyces to the renal pelvis, and from the pelvis to the ureter, which can cause manifestations of low back pain. The stones are small, and the process of stone discharge can irritate the ureteral mucosa, resulting in strong spasms of the ureteral mucosa, in which case there will be pain. Double kidney crystallization is recommended to drink more water, more urination, you can take lithotripsy drugs to promote the discharge of stones out of the body, to prevent the further increase of crystals, it will become a larger stone, large stones are more difficult to discharge, may need to be handled by extracorporeal shock wave lithotripsy. Recommended for patients with double kidney crystals, drink more than 2500ml of water per day, eat more fresh greens, fruits, coarse grains, coarse fiber foods, and control the excessive intake of sodium and protein.