There are many causes of swollen testicles, such as orchitis, testicular syringomyelia, and testicular cancer. You can choose drug treatment, surgery treatment and so on. 1. Testiculitis: it can be due to inflammation of urinary system, pathogen infection to testis, which induces the occurrence of testicular inflammation, resulting in testicular edema, pain and other manifestations. Such patients can use cefdinir, amoxicillin and so on as prescribed by the doctor after clear diagnosis. 2. Testicular syringomyelia: patients with testicular syringomyelia may have swollen testicles after the accumulation of fluid in the testicular syringomyelia. Patients with small amount of fluid accumulation, low tension and no obvious symptoms can be followed up for observation. Patients with persistent and progressive increase of effusion can be treated with surgery, such as sheath reversal surgery. 3. Testicular cancer: patients with testicular cancer may also have testicular swelling, which is caused by rapid proliferation of cancer cells. Patients who meet the indications of surgery can be treated with surgery, while those who are not suitable for surgery can be treated with radiotherapy. There are other reasons that can lead to testicular swelling, and it is recommended that such patients go to regular hospitals for diagnosis, clarification of the reasons and active treatment.