Clinically, patients with stones of 4 mm in diameter found on examination may first opt for conservative treatment. However, urological ultrasound and routine urine examination should be performed to clarify whether there is urinary fluid accumulation or secondary urinary tract infection caused by stones. If these complications are caused by stones, aggressive surgical treatment, such as ureteroscopic Holmium laser lithotripsy, should be performed in a timely manner. This is because even stones of small diameter, which form adhesions and wraps around the ureteral wall, can cause hydronephrosis or remain locally in situ for a long time, which can also cause slow urine flow. Therefore, it can be secondary to urinary tract infection, which can lead to the formation of encapsulation of the stone with the mucosa of the ureteral epithelium, so patients with this condition should undergo surgery promptly. Clinically, for simple stones <6mm in diameter or less, they can be treated conservatively by drinking more water, urinating more often, and exercising longitudinally, and can usually be expelled in about 2 weeks.