Testicular pain after sitting or standing for a long time is considered to be caused by syringomyelia, prostatitis, varicocele, orchitis and other diseases. 1. Syringomyelia: It is usually due to the production of fluid in the syringomyelia cavity that exceeds its absorptive capacity, and it is also related to developmental delays, surgery and other factors. Generally, patients with less fluid accumulation have no conscious symptoms, but if there is too much fluid accumulation, there can be a falling sensation and tugging pain, and thus testicular pain can also occur after sitting or standing for a long time. 2. Prostatitis: the disease is urology clinical more common diseases, divided into different types, patients often appear perineum, pubic area sexual pressure feeling, pelvic area to the perineum, scrotum and other parts of the radioactive pain and other symptoms. The male testicles are located inside the scrotum, and some patients may experience testicular pain after sitting or standing for a long time. 3. Varicocele: This is a vascular disease, the specific cause is still unclear, clinical considerations are related to the patient’s spermatic vein valve insufficiency, venous blood reflux obstacles and other factors. Patients with this disease often have symptoms such as scrotal enlargement, hidden pain, swelling, etc., which can be aggravated after prolonged sitting, standing and walking, resulting in testicular pain after prolonged sitting or standing. 4. Testiculitis: this disease is mainly due to bacterial, viral and other pathogens infection, often leading to testicular enlargement, pain, swelling and other symptoms, some of the milder patients with symptoms are not obvious, and may be manifested as testicular pain after sitting or standing for a long time. It is recommended that patients with testicular pain after sitting or standing for a long time should consult a doctor as soon as possible for examination and active treatment after clarifying the specific cause of the disease.