Whether coitus is conducive to stone expulsion should depend on the actual situation. If the stone is small in diameter and can be discharged from the body on its own, coitus is favorable for stone expulsion. If the diameter of the stone is large, coitus is not conducive to stone expulsion. Stone diameter is small, can be successfully discharged through the urinary tract system, in the coitus due to the need to carry out some activities, to help the stone to the outside of the body, and to increase the amount of drinking water, more urination, to promote the movement of the stone, is also conducive to the discharge. Stone diameter is large, in the discharge stuck in the urinary system, such as the end of the ureter or urethra, coitus is not only not conducive to the discharge of stones, but also may cause significant pain in the lower back and abdomen, pain in the penis and other symptoms, the urinary tract system will cause damage. Therefore, the existence of stones, should follow the doctor’s guidance, reasonable treatment.