Testicular pain, ultrasound normal first consideration is prostatitis, in addition to genital herpes, contact dermatitis, testicular inflammation and other diseases may also be caused. 1. prostatitis: testicular pain ultrasound normal first consider prostatitis, because prostatitis often appear testicular involving pain while the testicle itself is no problem. Genital herpes: genital herpes is mainly caused by herpes simplex virus infection, patients can appear in the testicular area local itching, blisters, pain and other symptoms, usually through the ultrasound can not detect the disease. 2. Contact dermatitis: contact dermatitis is an allergic reaction caused by skin contact with exogenous substances, which irritates the skin. Patients may have symptoms such as erythema, burning, swelling, pain and pimples in the testicular area, which manifests as testicular pain but normal ultrasound. 3. Testiculitis: Testiculitis is mostly due to bacterial infection, viral infection and other factors. The patient can appear testicular enlargement, pain, tenderness and other symptoms, part of the testicular inflammation of the patient’s condition is mild, or in the early stage of the disease can also appear testicular pain, color ultrasound normal situation. There are many reasons that lead to testicular pain, color ultrasound normal, we suggest that the patient timely identify the cause of the disease, and active treatment.