If you still have swelling 5 months after varicocele surgery, it may be due to incomplete surgery, postoperative infection or prostatitis. 1. Incomplete surgery: Varicocele surgery is used to treat dilated, tortuous and elongated blood vessels of the venous plexus caused by stagnation of blood flow in the spermatic veins. If the blood in the spermatic vein is not completely removed during the surgery, so that the spermatic vein is not completely unobstructed, the patient’s spermatic vein may gradually stagnate 5 months after the surgery, and varicocele occurs again, so the patient will also feel swelling in the scrotum or testicles. 2. Post-operative infection: If the patient who has undergone varicocele surgery does not effectively control the infection after the surgery, resulting in the surgical wound being infected by pathogens, under the stimulation of pathogenic microorganisms and inflammatory factors, it can cause the local blood vessels to dilate and swell, which will make the patient feel that the affected area still has a feeling of swelling. 3. Prostatitis: Prostatitis often manifests itself as a feeling of falling in the scrotum, scrotal discomfort, and may be accompanied by a feeling of abdominal distension. The scrotal swelling after 5 months of varicocele surgery may also be caused by other factors, it is recommended that the patient go to the regular hospital in time, by the doctor according to the specific conditions, to develop individualized diagnosis and treatment plan, in order to avoid delaying the condition.