What should I do if there are crystals in my left kidney?

When crystals are present in the left kidney, the following measures can be taken: 1. **Drink plenty of water**: Ensure a daily urine output of more than 2000 mL to increase urine flow and promote the excretion of crystals through urine. 2. **Medication**: Select appropriate medications based on the type of crystals. For example, uric acid crystals can be managed by dietary adjustments and medications to reduce uric acid production; calcium oxalate and ammonium oxalate crystals can be prevented through dietary changes and medication; for calcium phosphate crystals, intake of high-phosphorus foods should be reduced while increasing calcium and vitamin D intake, along with the use of diuretics or phosphate binders. 3. **Dietary adjustments**: Limit consumption of foods high in purines, oxalates, and phosphorus, and increase intake of foods rich in alkaline, calcium, and vitamin D. 4. **Regular follow-up**: Perform regular urinalysis and color Doppler ultrasound examinations of the urinary system to monitor the condition and adjust the treatment plan according to medical advice.