Men with 1.66cm kidney stones should first consider minimally invasive surgery to remove the stones, such as ureteral flexible or percutaneous nephrolithotomy, and postoperatively assisted by drinking plenty of water and medication. 1. Surgery: For kidney stones of 1.66cm, surgery can be considered first. Minimally invasive surgery is recommended to remove the stones, which will cause less damage to the kidneys and faster recovery after surgery. 2. General treatment: After surgery, you can change your dietary habits, such as drinking more water and urinating regularly, to prevent the recurrence of stones. 3. Medication: male patients can also take sodium bicarbonate tablets regularly to change the acidic environment in the body, which can help prevent the recurrence of stones, and can also take medication such as lithotripsy granules as prescribed by the doctor. For men with 1.66cm kidney stones, you need to consult a doctor in time for active treatment, and pay attention to avoid spicy and greasy diet, and actively prevent the formation of kidney stones.