The present disclosure relates to a ureteral stent and a preparation method thereof. The ureteral stent has at least one pre-coating formed on its surface and at least one hydrophilic lubricating coating formed on the pre-coating. Preferably, the pre-coating and the hydrophilic lubricating coating are formed by photocuring, thermal curing, chemical reaction, physical adsorption, crystallization or freezing. By means of the technical solutions of the present disclosure, a stable and firm coating is formed on the surface of the ureteral stent with a more complicated shape, the friction force (the friction force of the 30th cycle is small, and the friction force of the 30th cycle/initial friction force is kept within 2 times) of the ureteral stent is greatly reduced, and the lubricating performance is greatly improved.