Left testicular pain with small abdominal pain, the most common three diseases, namely left epididymitis, left varicose veins or left testicular torsion, must be checked as soon as possible ultrasound to confirm the diagnosis, ultrasound to do testicular, epididymis, spermatic vein ultrasound, as follows: 1, left epididymitis: with left small abdominal pain, ultrasound can see the enlarged epididymis, see increased blood flow to the testicle; 2, left varicose veins:: With small abdominal pain indicates that varicose veins have led to testicular blood circulation obstruction, venous reflux obstruction, so testicular pain, need to operate as soon as possible; 3, testicular torsion: to operate as soon as possible, the ultrasound will suggest that there is testicular blood flow disappeared, or reduced.