Urethral stones primarily refer to stones located within the urethra. Based on their location within the urethra, urethral stones are classified into anterior and posterior urethral stones. Posterior urethral stones typically indicate stones lodged at the position of the prostate. In such cases, the main areas of pain are the lower abdomen, the anal region, and the perineum. On the other hand, anterior urethral stones refer to stones located in the anterior urethra, with the usual sites of pain being the palpable area of the penile urethra, mainly presenting as painful urination. Therefore, examinations such as color ultrasound are necessary to precisely identify the location of the stones for targeted treatment.