0.3 cm kidney stones can usually be discharged by themselves in about 1~2 weeks after treatment. For patients with kidney stones less than 0.6 cm in diameter, stone removal treatment is usually taken. Under doctor’s instruction, you can take potassium hydrogen citrate sodium granules and so on, together with drinking plenty of water and proper exercise to help the stones to be discharged. Generally after the treatment of lithotripsy, 0.3 cm kidney stones can be discharged in about 1~2 weeks. If the stone has not been discharged, it may be due to the adhesion of the stone to the mucosa of the calyx and renal pelvis, or the diameter of the stone in the calyx is larger than the opening of the calyx, or the stone is located in the lower calyx of the kidney, which needs to be combined with the positional lithotripsy in order to be discharged. It is recommended that the patient go to the hospital and repeat the ultrasound examination to check the situation of stone expulsion. For stones that cannot be dislodged by lithotripsy and are more than 6mm in diameter, surgical treatment such as extracorporeal shock wave lithotripsy can be performed. Kidney stone patients need to consult the doctor in time for examination and early treatment.