The incidence of testicular tumor is not very high compared to other malignant tumors, accounting for about 1%-1.5% of malignant tumors in men, but testicular tumor is the most common tumor in men aged 15-30. The most common symptom of testicular tumor is a lump inside the scrotum, and the lump will keep increasing, sometimes accompanied by pain, and even bleeding inside the rapidly increasing tumor, which will cause severe pain. Therefore, if you find a hard lump on the testicle and suspect it is a testicular tumor, you should go to the hospital for further examination, and you can start with an ultrasound examination of the testicle. If it is confirmed to be an intra-testicular lump, further examination including blood methemoglobin, lactate dehydrogenase, HCG test, as well as CT scan of abdominopelvic cavity and chest X-ray will be needed. Regardless of the type of testicular tumor, a high-grade orchiectomy as well as a spermatic cord ligation is usually performed first, and the next step of treatment is decided according to the pathological stage.