The tendons connected to the testicles are swollen and painful, it is recommended to go to the hospital for further examination to clarify the possible causes: 1. varicocele, the tendons connected to the testicles are also known as spermatic cord tissue, if varicocele occurs, local swelling or pain can occur, which is more obvious after activity, and thickened and tortuous blood vessels can be felt by hand touch, which may be accompanied by mild swelling of the scrotum or testicles, further ultrasound examination of the spermatic cord is needed to confirm the diagnosis. 2. When suffering from orchitis or epididymitis, inflammation may involve the spermatic cord and lead to thickening of the spermatic cord, which may result in the above mentioned swelling and pain, which may be relieved after proper rest, or the pain may be relieved after holding the scrotum up. The amount of sphincter fluid further increases, the local swelling and pain is more obvious, and the appearance of the scrotum root or groin area is swollen or thickened, and further ultrasound examination of the spermatic cord is needed to confirm the diagnosis.