A 32-year-old man presented with severe scrotal pain after vasectomy. Scrotal ultrasound showed the presence of enlargement and decreased echogenicity of more than the upper two-thirds of the right testis. After orchiectomy, scrotal pain disappeared. This is the first report of simple orchiectomy after subtotal testicular infarction due to a suture tie of vasectomy. During vasectomy, it is important to dissect the bare vas to minimize vascular injury.