The absence of spermatogenic cells may be caused by bilateral cryptorchidism, varicocele, vasectomy and so on. 1. Bilateral cryptorchidism: affected by many factors such as heredity and maternal health, patients may have bilateral cryptorchidism, which will lead to abnormal testicular development, thus causing the absence of spermatogenic cells in the spermatozoa. 2. Varicocele: prolonged sitting or suffering from kidney tumor and other diseases can lead to venous reflux obstruction which can easily cause varicocele. Varicocele can affect the quality of semen and lead to male infertility, in which case there will be no spermatogenic cells, and in serious cases, it will lead to testicular atrophy. 3. Vasectomy: Some men who undergo vasectomy may also have no spermatogenic cells. The absence of spermatogenic cells may also be caused by other reasons, such as epididymitis or epididymal tuberculosis, etc. They should go to the hospital in time to clarify the cause of the disease and choose the appropriate method of treatment.