Men with varicocele microscopy surgery for 19 days, sometimes testicles are a little swollen, mainly considered to be related to poor blood circulation, inflammatory stimulation and other factors. 1. Poor blood circulation: after the operation, the collateral circulation in the spermatic cord and nearby testicles is not fully established, which will lead to poor venous return, and the symptom of testicular enlargement can appear. 2. Inflammatory stimulation: poor postoperative prognosis, resulting in inflammation of the affected area, may also appear testicular enlargement, pain and other uncomfortable symptoms. 3. Other factors: external injury, syringomyelia and other factors can also cause testicular enlargement. If the above symptoms occur, patients should pay attention to them, go to the hospital where the surgery is performed as soon as possible for diagnosis, and follow the doctor’s instructions for disposal.