If a male patient has sudden unilateral testicular pain, if it is accompanied by redness of scrotal skin, elevated skin temperature, scrotal swelling and pain, which can be relieved by lying down and resting, and when palpation, it is obvious that the epididymis and testicle are enlarged, and the boundary between the two is indistinct, and the pain is obvious when palpating the testicle, the pain can be relieved when holding up the testicle with hands, it can be diagnosed as unilateral epididymitis or orchitis, and anti-inflammatory treatment should be carried out in time. If there is sudden unilateral testicular pain and testicular upward contraction, and the pain is aggravated when the testicle is held up by hand, it can be diagnosed as testicular torsion or adnexal torsion. Therefore, if the above symptoms appear, go to the hospital in time to avoid delaying the disease.