The possible causes of male genital swelling and pain: 1, infection, infection can occur in any part of the genitalia such as the foreskin, glans or urethra, infection will cause local mucosal swelling or edema, so there will be obvious swelling and pain, especially acute infection can even cause mucosal erosion, exudation or increased secretions, accompanied by local tingling sensation, etc., the need for relevant pathogenic 2. Trauma to the genitalia such as direct violent blows, crush injuries or chronic blunt contusions can lead to genital swelling, and the swelling can be further aggravated as the degree of injury increases. 3. These lesions can damage the genitalia and the mucous membrane of the urethra and cause radiating pain throughout the genitalia, such as urethral stones that can radiate to the glans, and urethral tumors that can further progress and damage the spongy body of the penis, causing local swelling and pain.