There are two disorders that should be given due consideration when it comes to pain below the testicle, one is acute epididymitis and orchitis; the other is acute testicular torsion, and a scrotal ultrasound is recommended to confirm the diagnosis. Acute orchitis, epididymitis will be found in the testicle epididymis is enlarged, testicular epididymis blood supply is very rich. This condition requires bed rest and intravenous fluids with broad-spectrum antimicrobials. This condition progresses rapidly and can be relieved by bed rest and local pain medication. In cases of acute epididymal torsion, emergency surgery is needed. Ultrasound will show that the blood flow to the testis has become low, and early surgery can avoid torsional necrosis of the testis and the risk of orchiectomy.