Left kidney crystals are actually a type of small left kidney stone. Some stones form mostly as small crystals that slowly accumulate and get bigger like a snowball. When small crystals or small stones are small, they can usually be treated conservatively, including drinking a lot of water and medication. Drinking a lot of water is very important, the daily urine volume should reach more than 2000ml to increase the urine flow rate, which can promote the discharge of crystals. There is another kind of lithotripsy that can be done medically, such as pure uric acid stones, cystine stones or cystine crystals type, which can be solved by alkalinizing the urine, which is more effective. If the crystals are caused by infection, such as magnesium ammonium phosphate crystals, you need to take oral ammonium chloride and other drugs to acidify the urine acid-base neutralization, so that the crystals become smaller, and then expelled from the urine.