Small bilateral crystals without any intervention can gradually increase in size over a period of about 3-6 months and form small stones in the kidneys. However, with early intervention, the crystals can be quickly discharged from the body without causing any after-effects, and no stones will be formed. Generally, small kidney crystals are often less than 2mm crystals, through drinking more water, urinating more, diluting urine, alkalizing urine and other treatments, the crystals can be expelled from the body. For patients with metabolic abnormalities, such as high uric acid and calcium metabolism, the crystals can be dissolved or excreted soon after treatment with relevant medications. However, if the above interventions are not carried out, and the urine remains concentrated for a long period of time and under some abnormal metabolism, the size of crystals can gradually increase within half a year or lead to the formation of kidney stones, especially if the urine remains concentrated for a long period of time, kidney stones can be formed very quickly.