The causes of ureteral stones include drugs, metabolic abnormalities and local factors such as urinary tract obstruction and infection, and are also related to other factors such as diet. 1. Drugs: Studies have shown that drugs such as amphotericin and sulfonamides are themselves stone components, and if used inappropriately for a long period of time, they will form stones. Secondly, drugs such as acetazolamide and vitamin D will promote the formation of other components of stones in the process of metabolism. 2. Abnormal metabolism: there are calcium, oxalic acid, cystine and other common stone components in urine, so when physiological disorders occur, resulting in abnormal metabolism is easy to promote stone growth. 3. Local factors: mainly related to urinary tract obstruction, urinary tract infection, ureteral stenosis and other reasons. 4. Other: If the amount of drinking water is too small, leading to the concentration of urine, which increases the risk of stone formation, but also with the intake of too much animal protein, salt, oxalic acid and other ingredients. When the presence of ureteral stones is detected, it is necessary to actively cooperate with the doctor to carry out standardized treatment, strengthen daily life management, and follow up on time.