An 8 year old child with pain in one testicle and the upper part of the testicle and a normal ultrasound may have neuralgia or psychological factors. Normal ultrasound examination mostly indicates that there is no substantial testicular lesion. 1. Neuralgia: Neuralgia caused by abnormal local nerve regulation may cause pain in one testicle and the upper part of the testicle of an 8-year-old boy with a normal color ultrasound examination. 2. Psychological factors: it is possible that the child has mental and psychological abnormalities, and will also feel the symptoms of one side of the testicle and the upper part of the pain, while the ultrasound examination is normal. If the pain is serious, you need to choose some anti-inflammatory analgesic drugs for symptomatic treatment, if the pain is not serious and does not affect the study life, more accompanied by the child to divert attention, it is possible to recover on their own.